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description Publicationkeyboard_double_arrow_right Other literature type , Article 2023 FrancePublisher:Springer Science and Business Media LLC Simon Thivet; Luiz Pereira; Nicolas Menguy; Étienne Médard; Pauline Verdurme; Carole Berthod; David Troadec; Kai-Uwe Hess; Donald B. Dingwell; Jean-Christophe Komorowski;AbstractNanoscale liquid immiscibility is observed in the 2018–2021 Fani Maoré submarine lavas (Comoros archipelago). Heat transfer calculations, Raman spectroscopy, scanning and transmission electron microscopy reveal that in contrast to thin (500 µm) outer rims of homogeneous glassy lava (rapidly quenched upon eruption, >1000 °C s−1), widespread liquid immiscibility is observed in thick (1 cm) inner lava rims (moderately quenched, 1–1000 °C s−1), which exhibit a nanoscale coexistence of Si- and Al-rich vs. Ca-, Fe-, and Ti-rich melt phases. In this zone, rapid nanolite crystallization contrasts with the classical crystallization process inferred for the slower cooled ( < 1 °C s−1) lava interiors. The occurrence of such metastable liquid immiscibility at eruptive conditions controls physicochemical characteristics of nanolites and residual melt compositions. This mechanism represents a common yet frequently unobserved feature in volcanic products, with the potential for major impacts on syn-eruptive magma degassing and rheology, and thus on eruptive dynamics.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerCommunications Earth & EnvironmentArticle . 2023 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s43247-023-01158-w&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerCommunications Earth & EnvironmentArticle . 2023 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s43247-023-01158-w&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 France, GermanyPublisher:Copernicus GmbH Daigle, Hugh; Duarte, João C.; Fagereng, Ake; Paris, Raphaël; Persaud, Patricia; Gómez-García, Ángela María; the Lisbon MagellanPlus Workshop Participants;Abstract. Oceanic natural hazards pose threats to coastal communities worldwide. These include earthquakes, tsunamis, submarine landslide, volcanic eruptions, and tropical cyclones. Scientific ocean drilling can contribute to our understanding and assessment of these hazards through rapid response measurements of hazardous events, learning from past hazard records, and sub-seafloor monitoring and observation. With the impending retirement of the D/V JOIDES Resolution and operational limitations of the D/V Chikyu, it is important to consider other options for achieving scientific ocean drilling goals. We convened a workshop in Lisbon, Portugal, in July 2022 to identify locations where natural hazards, or preferably several different hazards, can be addressed with mission-specific platform (MSP) drilling, with a consideration of further location-based workshops. Participants split into three working groups to develop hypotheses surrounding climate and tropical cyclones, slope failure, and processes at active margins that can be tested with MSP drilling and can be addressed using the unique capabilities of these platforms. We produced 13 questions or hypotheses with recommendations on specific areas or locations for drilling. Our hope is that the results of this workshop will lay the groundwork for future pre-proposals.
Scientific Drilling ... arrow_drop_down GFZ German Research Centre for GeosciencesArticle . 2023License: CC BYData sources: GFZ German Research Centre for GeosciencesHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/sd-32-101-2023&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Scientific Drilling ... arrow_drop_down GFZ German Research Centre for GeosciencesArticle . 2023License: CC BYData sources: GFZ German Research Centre for GeosciencesHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/sd-32-101-2023&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 FrancePublisher:OpenEdition Defive, Emmanuelle; Miallier, Didier; Pilleyre, Thierry; Nomade, Sébastien; Guillou, Hervè; Moska, Piotr; Tudyka, Konrad; Chapron, Emmanuel; Miras, Yannick; Virmoux, Clément; Queffelec, Alain; Jouannic, Gwénolé; Cortial, Casimir; Goslar, Tomasz; Raynal, Jean Paul;International audience; After presenting the geographical framework of this region on the south-eastern edge of the Massif Central which saw the birth of volcanology and still fuels debates on the contemporaneity of man and extinct volcanoes, we recall the general context and chronology of recent volcanic activity in the Velay-Vivarais, known as the “Young Volcanoes of Ardèche”. We insist on the contradictory results provided by the different dating methods used in recent decades (14C, OSL, TL, K/Ar and 40Ar/39Ar) and provide new results about three localities: the Grand Suc de Breysse (Présailles, Haute-Loire), the Suc de Bauzon whose flow dammed the Palaeo-Loire at Rieutord (Usclades-et-Rieutord, Ardèche) and the Issarlès maar (Le Lac d’Issarlès, Ardèche) with lacustrine sedimentary archives preserved below a 108.5 m waterbody. The eruption of the Grand Suc de Breysse began with a phreatomagmatic phase during MIS 5 (OSL, TL, K/Ar). The filling of the Rieutord volcanic dam paleo-lake fossilises a basaltic flow dated at 85 ± 4 ka (K/Ar) and continues during MIS 3: in its central part, the upper part of the preserved deposit is dated between 41.7 and 18.2 ka (14C and OSL); in its upstream part, deltaic deposits of the paleo-Loire are dated between 52 ± 2 and 35 ± 3 ka (OSL). The eruption of the Issarlès maar is dated at 54 ± 8 ka (TL), confirming that it belongs to a recent phase of the volcanism of the “Young Volcanoes of Ardèche”. At the moment, no Palaeolithic vestiges are directly associated with these three volcano-sedimentary complexes.; Cet article est une contribution à l’étude chronostratigraphique du volcanisme récent du Bas Vivarais (les « Jeunes volcans d’Ardèche ») et des dépôts qui s’y trouvent associés. Après avoir présenté le cadre géographique de cette région de la bordure sud-est du Massif central (Velay-Vivarais) qui vit naître la volcanologie et a alimenté jusqu’à aujourd’hui les débats sur la contemporanéité de l’homme et des volcans éteints, le contexte général et la chronologie de l’activité volcanique récente sont rappelés. On insiste sur les résultats contradictoires des différentes méthodes de datation utilisées au cours des dernières décennies (14C, OSL, TL, K/Ar et 40Ar/39Ar). Après la présentation des méthodes, les résultats inédits obtenus sur trois systèmes volcaniques sont exposés et discutés : le Grand Suc de Breysse (Présailles, Haute-Loire), le Suc de Bauzon et sa coulée ayant barré la paléo-Loire à Rieutord (Usclades-etRieutord, Ardèche), et le maar d’Issarlès (Le Lac d’Issarlès, Ardèche) et ses archives sédimentaires lacustres préservées par 108,5 m de fond. L’éruption du Grand Suc de Breysse débute par une phase phréatomagmatique au cours du MIS 5 (OSL, TL, K/Ar). Le remplissage du paléo-lac de barrage volcanique de Rieutord fossilise une coulée basaltique datée de 85 ± 4 ka (K/Ar). À l’amont du système, des dépôts deltaïques sont datés entre 52 ± 2 et 35 ± 3 ka (OSL) ; dans la zone de cœur de lac, les dépôts préservés, contemporains du MIS 3, se mettent en place entre 41,7 et 18,2 ka (14C et OSL). L’éruption du maar d’Issarlès est datée à 54 ± 8 ka(TL), confirmant son appartenance à une phase récente du volcanisme des « Jeunes volcans d’Ardèche ». On note pour le moment l’absence d’indice archéologique paléolithique directement associé à ces trois systèmes volcano-sédimentaires
OpenEdition arrow_drop_down HAL CY Cergy Paris Université; Mémoires en Sciences de l'Information et de la CommunicationOther literature type . Article . 2023HAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BY SAFull-Text: https://hal.science/hal-04195152/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesbronze 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert OpenEdition arrow_drop_down HAL CY Cergy Paris Université; Mémoires en Sciences de l'Information et de la CommunicationOther literature type . Article . 2023HAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BY SAFull-Text: https://hal.science/hal-04195152/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2023 Italy, Switzerland, France, Italy, Spain, SpainPublisher:Elsevier BV Funded by:EC | FELLINI, ANR | UnivEarthS, ANR | Université de ParisEC| FELLINI ,ANR| UnivEarthS ,ANR| Université de ParisA. Albert; S. Alves; M. André; M. Ardid; S. Ardid; J. -J. Aubert; J. Aublin; B. Baret; S. Basa; Y. Becherini; B. Belhorma; M. Bendahman; F. Benfenati; V. Bertin; S. Biagi; M. Bissinger; J. Boumaaza; M. Bouta; M. C. Bouwhuis; H. Brânzaş; R. Bruijn; J. Brunner; J. Busto; B. Caiffi; D. Calvo; S. Campion; A. Capone; L. Caramete; F. Carenini; J. Carr; V. Carretero; S. Celli; L. Cerisy; M. Chabab; T. N. Chau; R. Cherkaoui El Moursli; T. Chiarusi; M. Circella; J. A. B. Coelho; A. Coleiro; R. Coniglione; P. Coyle; A. Creusot; A. F. Díaz; B. De Martino; C. Distefano; I. Di Palma t; A. Domi; C. Donzaud; D. Dornic; D. Drouhin; T. Eberl; T. van Eeden; D. van Eijk; S. El Hedri; N. El Khayati; A. Enzenhöfer; M. Fasano; P. Fermani; G. Ferrara; F. Filippini; L. Fusco; S. Gagliardini; J. García; C. Gatius Oliver; P. Gay; N. Geißelbrecht; H. Glotin; R. Gozzini; R. Gracia Ruiz; K. Graf; C. Guidi; L. Haegel; S. Hallmann; H. van Haren; A. J. Heijboer; Y. Hello; J. J. Hernández-Rey; J. Hößl; J. Hofestädt; F. Huang; G. Illuminati; C. W. James; B. Jisse-Jung; M. de Jong p; P. de Jong; M. Kadler; O. Kalekin; U. Katz; A. Kouchner; I. Kreykenbohm; V. Kulikovskiy; R. Lahmann; M. Lamoureux; A. Lazo; D. Lefèvre; E. Leonora; G. Levi; S. Le Stum; D. Lopez-Coto; S. Loucatos; L. Maderer; J. Manczak; M. Marcelin; A. Margiotta; A. Marinelli; J. A. Martínez-Mora; P. Migliozzi; A. Moussa; R. Muller; L. Nauta; S. Navas; A. Neronov; E. Nezri; B. Ó Fearraigh; A. Păun; G. E. Păvălaş; M. Perrin-Terrin; V. Pestel; P. Piattelli; C. Poire'; V. Popa; T. Pradier; N. Randazzo; D. Real; S. Reck; G. Riccobene; A. Romanov; A. Sánchez-Losa; A. Saina; F. Salesa Greus; D. F. E. Samtleben; M. Sanguineti; P. Sapienza; D. Savchenko; J. Schnabel; J. Schumann; F. Schüssler; J. Seneca; M. Spurio; Th. Stolarczyk; M. Taiuti; Y. Tayalati; S. J. Tingay; B. Vallage; G. Vannoye; V. Van Elewyck; S. Viola; D. Vivolo; J. Wilms; S. Zavatarelli; A. Zegarelli; J. D. Zornoza; J. Zúñiga;handle: 11386/4843772 , 2117/388081
Interactions of cosmic ray protons, atomic nuclei, and electrons in the interstellar medium in the inner part of the Milky Way produce a γ-ray flux from the Galactic Ridge. If the γ-ray emission is dominated by proton and nuclei interactions, a neutrino flux comparable to the γ-ray flux is expected from the same sky region. Data collected by the ANTARES neutrino telescope are used to constrain the neutrino flux from the Galactic Ridge in the 1-100 TeV energy range. Neutrino events reconstructed both as tracks and showers are considered in the analysis and the selection is optimized for the search of an excess in the region |l| <30◦, |b| <2◦. The expected background in the search region is estimated using an off-zone region with similar sky coverage. Neutrino signal originating from a power-law spectrum with spectral index ranging from ν=1to 4is simulated in both channels. The observed energy distributions are fitted to constrain the neutrino emission from the Ridge. The energy distributions in the signal region are inconsistent with the background expectation at ∼96%confidence level. The mild excess over the background is consistent with a neutrino flux with a power law with a spectral index 2.45+0.22−0.34and a flux normalization dNνdEν=4.0+2.7−2.0×10−16GeV−1cm−2s−1sr−1at 40 TeV reference energy. Such flux is consistent with the expected neutrino signal if the bulk of the observed γ-ray flux from the Galactic Ridge originates from interactions of cosmic ray protons and nuclei with a power-law spectrum extending well into the PeV energy range Consiliul National al Cercetarii Stiintifice (CNCS) Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI) ANR-10-LABX-0023 ANR-18-IDEX-0001 Arab Fund for Economic and Social Development ASFAE/2022/023 ASFAE/2022/014 PROMETEO/2020/019 GENT/2018/034 GENT/2019/043 GENT/2020/049 GENT/2021/23 P18-FR-5057 101025085 Ministry of Higher Education, Scientific Research and Training, Morocco PID2021-124591NB-C41 PID2021-124591NB-C42 PID2021-124591NB-C43 Programa Maria Zambrano (Spanish Ministry of Universities by the European Union, NextGenerationEU), Spain "European Union NextGenerationEU/PRTR", Programa de Planes Complementarios I+D+I Netherlands Organization for Scientific Research (NWO) Netherlands Government Centre National de la Recherche Scientifique (CNRS) Federal Ministry of Education & Research (BMBF) Istituto Nazionale di Fisica Nucleare (INFN) Marie Curie Actions European Union (EU) GenT of the Generalitat Valenciana Region Provence-Alpes-Cpte d'Azur Region Provence-Alpes-Cote d'Azur French Atomic Energy Commission ERDF A way of making Europe Junta de Andalucia 754496 European Union (EU) Programa Prometeo Region Grand-Est Labex UnivEarthS EU: MSC program MCIN/AEI
Archivio istituziona... arrow_drop_down Repositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaUPCommons. Portal del coneixement obert de la UPCOther literature type . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInfoscience - EPFL scientific publicationsOther literature typeData sources: Infoscience - EPFL scientific publicationsUPCommons. Portal del coneixement obert de la UPCArticle . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di SalernoHAL Clermont Université; Hyper Article en Ligne; Mémoires en Sciences de l'Information et de la Communication; HAL AMU; HAL-CEAOther literature type . Article . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 7 citations 7 popularity Top 10% influence Average impulse Top 10% Powered by BIP!visibility 39visibility views 39 download downloads 10 Powered bymore_vert Archivio istituziona... arrow_drop_down Repositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaUPCommons. Portal del coneixement obert de la UPCOther literature type . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInfoscience - EPFL scientific publicationsOther literature typeData sources: Infoscience - EPFL scientific publicationsUPCommons. Portal del coneixement obert de la UPCArticle . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di SalernoHAL Clermont Université; Hyper Article en Ligne; Mémoires en Sciences de l'Information et de la Communication; HAL AMU; HAL-CEAOther literature type . Article . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.physletb.2023.137951&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2023 France, Spain, France, France, Spain, ItalyPublisher:Springer Science and Business Media LLC Funded by:ANR | DAEMONS, ANR | UnivEarthS, ANR | Université de ParisANR| DAEMONS ,ANR| UnivEarthS ,ANR| Université de ParisAiello S.; Albert A.; Alves Garre S.; Aly Z.; Ambrosone A.; Ameli F.; Andre M.; Anghinolfi M.; Anguita M.; Ardid M.; Ardid S.; Aublin J.; Bagatelas C.; Bailly-Salins L.; Baret B.; Pree S. B.; Becherini Y.; Bendahman M.; Benfenati F.; Berbee E.; Bertin V.; Biagi S.; Boettcher M.; Cabo M. B.; Boumaaza J.; Bouta M.; Bouwhuis M.; Bozza C.; Branzas H.; Bruijn R.; Brunner J.; Bruno R.; Buis E.; Buompane R.; Busto J.; Caiffi B.; Calvo D.; Campion S.; Capone A.; Carenini F.; Carretero V.; Castaldi P.; Celli S.; Cerisy L.; Chabab M.; Chau N.; Chen A.; Moursli R. C. E.; Cherubini S.; Chiarella V.; Chiarusi T.; Circella M.; Cocimano R.; Coelho J. A. B.; Coleiro A.; Coniglione R.; Coyle P.; Creusot A.; Cruz A.; Cuttone G.; Dallier R.; Darras Y.; De Benedittis A.; De Martino B.; Burgo R. D.; Palma I. D.; Diaz A. F.; Diego-Tortosa D.; Distefano C.; Domi A.; Donzaud C.; Dornic D.; Dorr M.; Drakopoulou E.; Drouhin D.; Eberl T.; Eddyamoui A.; Eeden T.; Eff M.; Eijk D.; Bojaddaini I. E.; Hedri S. E.; Enzenhofer A.; Espinosa V.; Ferrara G.; Filipovic M. D.; Filippini F.; Fusco L. A.; Gabriel J.; Gal T.; Mendez J. G.; Soto A. G.; Garufi F.; Oliver C. G.; Geisselbrecht N.; Gialanella L.; Giorgio E.; Girardi A.; Goos I.; Gozzini S. R.; Gracia R.; Graf K.; Guderian D.; Guidi C.; Guillon B.; Gutierrez M.; Haegel L.; Haren H.; Heijboer A.; Hekalo A.; Hennig L.; Hernandez-Rey J. J.; Huang F.; Ibnsalih W. I.; Illuminati G.; James C. W.; Janezashvili D.; de Jong M.; de Jong P.; Jung B. J.; Kalaczynski P.; Kalekin O.; Katz U. F.; Chowdhury N. R. K.; Kistauri G.; Knaap F.; Kooijman P.; Kouchner A.; Kulikovskiy V.; Labalme M.; Lahmann R.; Lakhal A.; Lamoureux M.; Larosa G.; Lastoria C.; Lazo A.; Breton R. L.; Stum S. L.; Lehaut G.; Leonora E.; Lessing N.; Levi G.; Liang S.; Clark M. L.; Longhitano F.; Maderer L.; Majumdar J.; Manczak J.; Margiotta A.; Marinelli A.; Markou C.; Martin L.; Martinez-Mora J. A.; Martini A.; Marzaioli F.; Mastrodicasa M.; Mastroianni S.; Melis K. W.; Micciche S.; Miele G.; Migliozzi P.; Migneco E.; Mijakowski P.; Mollo C. M.; Morales-Gallegos L.; Morley-Wong C.; Moussa A.; Muller R.; Musone M. R.; Musumeci M.; Nauta L.; Navas S.; Nicolau C. A.; Nkosi B.; Fearraigh B. O.; Orlando A.; Oukacha E.; Gonzalez J. P.; Papalashvili G.; Papaleo R.; Pastor Gomez E. J.; Paun A. M.; Pavalas G. E.; Pellegrino C.; Pena Martinez S.; Perrin-Terrin M.; Perronnel J.; Pestel V.; Piattelli P.; Pisanti O.; Poire C.; Popa V.; Pradier T.; Pulvirenti S.; Quemener G.; Rahaman U.; Randazzo N.; Razzaque S.; Rea I. C.; Real D.; Greus F. S.; Losa A. S.; Sanguineti M.; Spisso B.; Stavropoulos D.; Taiuti M.; Wilms J.; Yepes-Ramirez H.; Zito D.; Zuniga J.;handle: 2117/387671 , 11591/497808 , 11386/4843771 , 11567/1155939
This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Units deployed at the bottom of the Mediterranean Sea, each composed of 18 Digital Optical Modules. The shadows induced by the Moon and the Sun were detected at their nominal position with a statistical significance of 4.2 and 6.2 , and an angular resolution of and , respectively, consistent with the prediction of from simulations. This early result confirms the effectiveness of the detector calibration, in time, position and orientation and the accuracy of the event direction reconstruction. This also demonstrates the performance and the competitiveness of the detector in terms of pointing accuracy and angular resolution. Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Universita e della Ricerca (MIUR), PRIN 2017 program Italy NAT-NET 2017W4HA7S GenT of the Generalitat Valenciana CIDEGENT/2018/034 CIDEGENT/2019/043 CIDEGENT/2020/049 CIDEGENT/2021/23 Programa Maria Zambrano (Spanish Ministry of Universities - European Union, NextGenerationEU), Spain Center for Forestry Research & Experimentation (CIEF) ASFAE/2022/023 ASFAE/2022/014 Netherlands Organization for Scientific Research (NWO) Netherlands Government Ministry of Higher Education, Scientific Research and Innovation, Morocco MCIN/AEI PID2021-124591NB-C41 PID2021-124591NB-C42 PID2021-124591NB-C43 Programa Prometeo of the Generalitat Valenciana PROMETEO/2020/019 LabEx UnivEarthS, France ANR-10-LABX-0023 ANR-18-IDEX-0001 National Authority for Scientific Research (ANCS), Romania Agence Nationale de la Recherche (ANR) ANR-15-CE31-0020 Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF), France Junta de Andalucia SOMM17/6104/UGR P18-FR-5057 Arab Fund for Economic and Social Development Commission Europeenne (FEDER fund), France Marie Curie Actions European Union (EU) Greek Ministry of Development-GSRT Paris ile-de-France Region, France German Research Foundation (DFG) National Science Centre, Poland ERDF A way of making Europe EU: MSC program 101025085 European Union (EU)
UPCommons. Portal de... arrow_drop_down UPCommons. Portal del coneixement obert de la UPCOther literature type . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCUPCommons. Portal del coneixement obert de la UPCArticle . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCRepositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaEuropean Physical Journal C: Particles and FieldsArticle . 2023 . Peer-reviewedLicense: CC BYData sources: CrossrefArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di Salernohttps://doi.org/10.48550/arxiv...Article . 2022License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!visibility 19visibility views 19 download downloads 7 Powered bymore_vert UPCommons. Portal de... arrow_drop_down UPCommons. Portal del coneixement obert de la UPCOther literature type . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCUPCommons. Portal del coneixement obert de la UPCArticle . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCRepositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaEuropean Physical Journal C: Particles and FieldsArticle . 2023 . Peer-reviewedLicense: CC BYData sources: CrossrefArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di Salernohttps://doi.org/10.48550/arxiv...Article . 2022License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Narváez, D. F.; Samaniego, Pablo; Koga, Kenneth, T.; Rose-Koga, Estelle, F.; Hidalgo, S.; Ratzov, G.;The origin of several geochemical parameters in continental arc lavas (e.g., La/Yb, Ba/Th) is controversial as to whether it is imparted by the slab or acquired in the crust. In Ecuador, where volcanoes are built over a thick crust (~50 km), this problem is grounded in the lack of primitive rocks. Here, we use melt inclusions hosted in Fo80–90 olivines to decipher the slab component signatures that metasomatises the sub-arc mantle. We report major, trace, and volatile elements analyzed in experimentally heated melt inclusions, which are from primitive rocks of Cotacachi, Cubilche, Cono de la Virgen, Conos de Licto, and Sangay volcanoes located in the north and south of the Ecuadorian arc. Based on trace element data and geochemical modeling, we recognize two types of slab components: one is indicative of aqueous fluids (e.g., high Ba/La, Pb/Ce, B/Nb), and the other is indicative of hydrous siliceous melts (e.g., high La/Nb, Th/Nb). The aqueous fluid signature is recognized in all volcanoes (except for Cono de la Virgen), and their F/Cl are distributed around 0.43 ± 0.07, independent of the distance to the Benioff zone. We propose a model where hydrous siliceous melts result from the subduction of a young oceanic crust north of the Grijalva fracture zone. Additionally, we show that the mantle under Licto and Sangay volcanoes is enriched prior to metasomatism by slab fluids. This study shows that melt inclusions give valuable insights into the composition of primitive melts that are rarely accessible as whole rocks.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Funded by:ANR | CLERVOLC, ANR | Université de ParisANR| CLERVOLC ,ANR| Université de ParisOryaëlle Chevrel; Pauline Verdurme; Charles Le Losq; Salomé Pannefieu; Etienne Médard; Carole Berthod; Jean-Christophe Komorowski; Patrick Bachèlery; Daniel R. Neuville; Lucia Gurioli;Following an unprecedented seismic activity that started in May 2018, a new volcanic edifice, now called Fani Maoré, was constructed on the ocean floor 50 km east of the island of Mayotte (Indian Ocean). This volcano is the latest addition to a volcanic chain characterized by an alkaline basanite-to-phonolite magmatic differentiation trend. Here, we performed viscosity measurements on five silicate melts representative of the East-Mayotte Volcanic Chain compositional trend: two basanites from Fani Maoré, one tephriphonolite and two phonolites from different parts of the volcanic chain. A concentric cylinder viscometer was employed at super-liquidus conditions between 1500 K and 1855 K and a creep apparatus was used for measuring the viscosity of the undercooled melts close to the glass transition temperature in the air. At super-liquidus temperatures, basanites have the lowest viscosity (0.11–0.34 to 0.99–1.16 log10 Pa⸱s), phonolites the highest (1.75–1.91 to 3.10–3.89 log10 Pa⸱s), while the viscosity of the tephriphonolite falls in between (0.89–1.97 log10 Pa⸱s). Near the glass transition, viscosity measurements have only been performed for one phonolite melt because obtaining pure glass samples for the basanite and tephriphonolite compositions was unsuccessful. This was due to the formation of nanolites upon quench as evidenced by Raman spectroscopy. The phonolite viscosity ranges from of 10.19 log10 Pa⸱s at 1058 K to 12.30 log10 Pa⸱s at 986 K. Comparison with existing empirical models revealed an underestimation of 1.2 to 2.0 log units at super-liquidus and undercooled temperatures, respectively, for the phonolite. This emphasizes (i) the lack of data falling along the alkaline basanite-to-phonolite magmatic differentiation trend to calibrate empirical models, and (ii) the complexity of modeling viscosity variations as a function of temperature and chemical composition for alkaline compositions. The new measurements indicate that, at eruptive temperatures between 1050 °C and 1150 °C (1323–1423 K), the oxidized, anhydrous, crystal-free and bubble-free basanite melt is very fluid, presenting a viscosity around 2.6 log10 Pa⸱s. In contrast, the anhydrous phonolite crystal- and bubble-free melt would have a viscosity around 6–10 log10 Pa⸱s at expected eruptive temperatures, which range from 800 to 1000 °C (1073–1273 K). Considering that both basanite and phonolite lavas from the Mayotte submarine volcanic chain contain <6% crystals and a significant amount of water, such viscosity values are probably upper limits. The new viscosity measurements are essential to define eruptive models and to better understand the storage and transport dynamics of Comoros Archipelago magmas, and of alkaline magmas in general, from the source to the surface.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Thivet, Simon; Hess, Kai-Uwe; Dingwell, Donald; Berthod, Carole; Gurioli, Lucia; Di Muro, Andrea; Lacombe, Tristan; Komorowski, Jean-Christophe;In July 2018, a large (ca. 6.55 km3), deep (ca. 2.5 to 3.3 km b.s.l) submarine eruption started ca. 50 km east of Mayotte Island. Samples of fresh basanitic lava rims were collected by dredging, at various times and locations from the newly formed Fani Maoré Edifice (FME). The logistical response to this extraordinary event also enabled the dredging of shallow (ca. 1.2 to 1.6 km below sea level, b.s.l.), fresh phonolitic lava and bomb rims in the so-called Horse-Shoe Area (HSA), ca. 15 km east of Mayotte. Better-known subaerial counterparts of Holocene age, have also been sampled in the La Vigie Maar (LVM) phonolitic deposits (Petite-Terre, Mayotte Island), for comparison with submarine samples. These samples belong to a single volcanic chain that extends from LVM to FME passing through HSA. A novel combination of Simultaneous Thermal Analysis (STA), which involves Differential Scanning Calorimetry (DSC), Thermal Gravimetry Analysis (TGA), and Evolved Gas Analysis conducted by Mass Spectrometry (EGA-MS), enable a reconstruction of the volatile distributions and compositions (H2O, CO2, and SO2) of these samples. Calorimetric and degassing profiles of controlled heating runs reveal different volatile reservoirs distributed as a function of sample textures and compositions, which have been further investigated by Scanning Electron Microscopy (SEM), Electron Probe Micro-Analysis (EPMA), and Raman spectroscopy. A linear correlation observed between the TGA and H2O-EGA-MS signal intensities also enables the quantification of adsorbed-external vs. dissolved-magmatic H2O contents of the studied samples. The novel application of this approach to volcanic products is thus confirmed as a reliable method to determine volatile characteristics in a wide range of samples, yielding a quantitative description of volatile behavior within the associated magmatic systems and eruptions.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Cellule MathDoc/CEDRAM Authors: Puzenat, Valentine; Feuillet, Nathalie; Komorowski, Jean-Christophe; Escartín, Javier; +16 AuthorsPuzenat, Valentine; Feuillet, Nathalie; Komorowski, Jean-Christophe; Escartín, Javier; Deplus, Christine; Bachèlery, Patrick; Berthod, Carole; Gurioli, Lucia; Scalabrin, Carla; Cathalot, Cécile; Rinnert, Emmanuel; Loubrieu, Benoît; Pierre, Delphine; Pitel-Roudaut, Mathilde; Tanguy, Nina; Fouquet, Yves; Jorry, Stephan, J; Lebas, Elodie; Paquet, Fabien; Thinon, Isabelle;doi: 10.5802/crgeos.175
International audience; Unlike subaerial volcanic activity, deep submarine eruptions are difficult to detect, observe and monitor. The objective of this paper is to describe a large and complex volcanic region, named the Horseshoe area, recently discovered at 1500 m below sea level on the eastern upper submarine slope of Mayotte Island. The area is crucial because, since 2018, it has experienced an exceptionally deep seismic activity associated with the ongoing submarine eruption that formed a new volcanic edifice, Fani Maoré, about 40 km to the east. We present the results of a multiscale study, based on high-resolution bathymetry and in-situ seafloor observations carried out with autonomous underwater vehicles (AUVs) and deep-towed camera systems. In-situ imagery provides ground-truth for the geological interpretation of seafloor textures mapped with the bathymetry. The combination of both datasets allows us to discuss the nature of the volcanic structures and to propose a relative chronology of previous eruptive events in the Horseshoe area. Based on our analyses, we propose the following chronology: (a) the emplacement of a large explosive volcanic cone, the Horseshoe edifice, (b) the later collapse of this edifice that resulted in the formation of an elongated, 2 km wide horseshoe-shaped depression, crosscutting older hummocky lava flows, (c) the development of an E–W eruptive fissure associated with numerous explosive craters, east of the Horseshoe edifice, and (d) late volcanism emanating from the rim of the horseshoe-shaped depression that fed elongated thin lava flows both towards and away from the depression. While all volcanic features mapped at the Horseshoe area were emplaced prior to the 2018 eruption, our study shows that this region has still been volcanically active in the recent past. Our results thus document a complex geological history at small spatial scales involved in the construction of major submarine edifices, and that are controlled by volcano-tectonic processes at larger scales.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2022Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYFull-Text: https://hal.science/hal-03957790/documentHAL Clermont Université; HAL-IRDArticle . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2022Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYFull-Text: https://hal.science/hal-03957790/documentHAL Clermont Université; HAL-IRDArticle . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Cellule MathDoc/CEDRAM Funded by:ANR | COYOTESANR| COYOTESJerome van der Woerd; Nicolas Mercury; Anne Lemoine; Cécile Doubre; Didier Bertil; Roser Hoste Colomer; Jean Battaglia;International audience; From 10 May 2018 to 1 November 2022 (time of writing), an unprecedented seismic activity is observed east of Mayotte Island (France), related to the largest submarine eruption ever recorded with offshore geophysical studies. Using signals from regional and local seismic stations, we build a comprehensive catalog of the local seismicity for the first ten months of the sequence. This catalog includes a total of 2874 events of magnitude (Mlv) ranging from 2.4 to 6.0, with 77% of them relocated using a double difference location procedure. The hypocentral locations over this period are highly dependent on the small seismic network available. Therefore we compare the locations of later events using a similar network and those estimated from a local ocean bottom seismometer (OBS) network installed since March 2019. Based on the time space evolution and characteristics of the seismicity, five distinct phases can be identified, corresponding to the successive activation of two deep seismic swarms, related to the lithospheric-scale magma ascent up to the seafloor, along with progressive deepening of the seismicity interpreted as decompression of a 40 km deep reservoir.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Other literature type , Article 2023 FrancePublisher:Springer Science and Business Media LLC Simon Thivet; Luiz Pereira; Nicolas Menguy; Étienne Médard; Pauline Verdurme; Carole Berthod; David Troadec; Kai-Uwe Hess; Donald B. Dingwell; Jean-Christophe Komorowski;AbstractNanoscale liquid immiscibility is observed in the 2018–2021 Fani Maoré submarine lavas (Comoros archipelago). Heat transfer calculations, Raman spectroscopy, scanning and transmission electron microscopy reveal that in contrast to thin (500 µm) outer rims of homogeneous glassy lava (rapidly quenched upon eruption, >1000 °C s−1), widespread liquid immiscibility is observed in thick (1 cm) inner lava rims (moderately quenched, 1–1000 °C s−1), which exhibit a nanoscale coexistence of Si- and Al-rich vs. Ca-, Fe-, and Ti-rich melt phases. In this zone, rapid nanolite crystallization contrasts with the classical crystallization process inferred for the slower cooled ( < 1 °C s−1) lava interiors. The occurrence of such metastable liquid immiscibility at eruptive conditions controls physicochemical characteristics of nanolites and residual melt compositions. This mechanism represents a common yet frequently unobserved feature in volcanic products, with the potential for major impacts on syn-eruptive magma degassing and rheology, and thus on eruptive dynamics.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerCommunications Earth & EnvironmentArticle . 2023 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerCommunications Earth & EnvironmentArticle . 2023 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s43247-023-01158-w&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 France, GermanyPublisher:Copernicus GmbH Daigle, Hugh; Duarte, João C.; Fagereng, Ake; Paris, Raphaël; Persaud, Patricia; Gómez-García, Ángela María; the Lisbon MagellanPlus Workshop Participants;Abstract. Oceanic natural hazards pose threats to coastal communities worldwide. These include earthquakes, tsunamis, submarine landslide, volcanic eruptions, and tropical cyclones. Scientific ocean drilling can contribute to our understanding and assessment of these hazards through rapid response measurements of hazardous events, learning from past hazard records, and sub-seafloor monitoring and observation. With the impending retirement of the D/V JOIDES Resolution and operational limitations of the D/V Chikyu, it is important to consider other options for achieving scientific ocean drilling goals. We convened a workshop in Lisbon, Portugal, in July 2022 to identify locations where natural hazards, or preferably several different hazards, can be addressed with mission-specific platform (MSP) drilling, with a consideration of further location-based workshops. Participants split into three working groups to develop hypotheses surrounding climate and tropical cyclones, slope failure, and processes at active margins that can be tested with MSP drilling and can be addressed using the unique capabilities of these platforms. We produced 13 questions or hypotheses with recommendations on specific areas or locations for drilling. Our hope is that the results of this workshop will lay the groundwork for future pre-proposals.
Scientific Drilling ... arrow_drop_down GFZ German Research Centre for GeosciencesArticle . 2023License: CC BYData sources: GFZ German Research Centre for GeosciencesHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/sd-32-101-2023&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Scientific Drilling ... arrow_drop_down GFZ German Research Centre for GeosciencesArticle . 2023License: CC BYData sources: GFZ German Research Centre for GeosciencesHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 FrancePublisher:OpenEdition Defive, Emmanuelle; Miallier, Didier; Pilleyre, Thierry; Nomade, Sébastien; Guillou, Hervè; Moska, Piotr; Tudyka, Konrad; Chapron, Emmanuel; Miras, Yannick; Virmoux, Clément; Queffelec, Alain; Jouannic, Gwénolé; Cortial, Casimir; Goslar, Tomasz; Raynal, Jean Paul;International audience; After presenting the geographical framework of this region on the south-eastern edge of the Massif Central which saw the birth of volcanology and still fuels debates on the contemporaneity of man and extinct volcanoes, we recall the general context and chronology of recent volcanic activity in the Velay-Vivarais, known as the “Young Volcanoes of Ardèche”. We insist on the contradictory results provided by the different dating methods used in recent decades (14C, OSL, TL, K/Ar and 40Ar/39Ar) and provide new results about three localities: the Grand Suc de Breysse (Présailles, Haute-Loire), the Suc de Bauzon whose flow dammed the Palaeo-Loire at Rieutord (Usclades-et-Rieutord, Ardèche) and the Issarlès maar (Le Lac d’Issarlès, Ardèche) with lacustrine sedimentary archives preserved below a 108.5 m waterbody. The eruption of the Grand Suc de Breysse began with a phreatomagmatic phase during MIS 5 (OSL, TL, K/Ar). The filling of the Rieutord volcanic dam paleo-lake fossilises a basaltic flow dated at 85 ± 4 ka (K/Ar) and continues during MIS 3: in its central part, the upper part of the preserved deposit is dated between 41.7 and 18.2 ka (14C and OSL); in its upstream part, deltaic deposits of the paleo-Loire are dated between 52 ± 2 and 35 ± 3 ka (OSL). The eruption of the Issarlès maar is dated at 54 ± 8 ka (TL), confirming that it belongs to a recent phase of the volcanism of the “Young Volcanoes of Ardèche”. At the moment, no Palaeolithic vestiges are directly associated with these three volcano-sedimentary complexes.; Cet article est une contribution à l’étude chronostratigraphique du volcanisme récent du Bas Vivarais (les « Jeunes volcans d’Ardèche ») et des dépôts qui s’y trouvent associés. Après avoir présenté le cadre géographique de cette région de la bordure sud-est du Massif central (Velay-Vivarais) qui vit naître la volcanologie et a alimenté jusqu’à aujourd’hui les débats sur la contemporanéité de l’homme et des volcans éteints, le contexte général et la chronologie de l’activité volcanique récente sont rappelés. On insiste sur les résultats contradictoires des différentes méthodes de datation utilisées au cours des dernières décennies (14C, OSL, TL, K/Ar et 40Ar/39Ar). Après la présentation des méthodes, les résultats inédits obtenus sur trois systèmes volcaniques sont exposés et discutés : le Grand Suc de Breysse (Présailles, Haute-Loire), le Suc de Bauzon et sa coulée ayant barré la paléo-Loire à Rieutord (Usclades-etRieutord, Ardèche), et le maar d’Issarlès (Le Lac d’Issarlès, Ardèche) et ses archives sédimentaires lacustres préservées par 108,5 m de fond. L’éruption du Grand Suc de Breysse débute par une phase phréatomagmatique au cours du MIS 5 (OSL, TL, K/Ar). Le remplissage du paléo-lac de barrage volcanique de Rieutord fossilise une coulée basaltique datée de 85 ± 4 ka (K/Ar). À l’amont du système, des dépôts deltaïques sont datés entre 52 ± 2 et 35 ± 3 ka (OSL) ; dans la zone de cœur de lac, les dépôts préservés, contemporains du MIS 3, se mettent en place entre 41,7 et 18,2 ka (14C et OSL). L’éruption du maar d’Issarlès est datée à 54 ± 8 ka(TL), confirmant son appartenance à une phase récente du volcanisme des « Jeunes volcans d’Ardèche ». On note pour le moment l’absence d’indice archéologique paléolithique directement associé à ces trois systèmes volcano-sédimentaires
OpenEdition arrow_drop_down HAL CY Cergy Paris Université; Mémoires en Sciences de l'Information et de la CommunicationOther literature type . Article . 2023HAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BY SAFull-Text: https://hal.science/hal-04195152/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesbronze 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert OpenEdition arrow_drop_down HAL CY Cergy Paris Université; Mémoires en Sciences de l'Information et de la CommunicationOther literature type . Article . 2023HAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BY SAFull-Text: https://hal.science/hal-04195152/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2023 Italy, Switzerland, France, Italy, Spain, SpainPublisher:Elsevier BV Funded by:EC | FELLINI, ANR | UnivEarthS, ANR | Université de ParisEC| FELLINI ,ANR| UnivEarthS ,ANR| Université de ParisA. Albert; S. Alves; M. André; M. Ardid; S. Ardid; J. -J. Aubert; J. Aublin; B. Baret; S. Basa; Y. Becherini; B. Belhorma; M. Bendahman; F. Benfenati; V. Bertin; S. Biagi; M. Bissinger; J. Boumaaza; M. Bouta; M. C. Bouwhuis; H. Brânzaş; R. Bruijn; J. Brunner; J. Busto; B. Caiffi; D. Calvo; S. Campion; A. Capone; L. Caramete; F. Carenini; J. Carr; V. Carretero; S. Celli; L. Cerisy; M. Chabab; T. N. Chau; R. Cherkaoui El Moursli; T. Chiarusi; M. Circella; J. A. B. Coelho; A. Coleiro; R. Coniglione; P. Coyle; A. Creusot; A. F. Díaz; B. De Martino; C. Distefano; I. Di Palma t; A. Domi; C. Donzaud; D. Dornic; D. Drouhin; T. Eberl; T. van Eeden; D. van Eijk; S. El Hedri; N. El Khayati; A. Enzenhöfer; M. Fasano; P. Fermani; G. Ferrara; F. Filippini; L. Fusco; S. Gagliardini; J. García; C. Gatius Oliver; P. Gay; N. Geißelbrecht; H. Glotin; R. Gozzini; R. Gracia Ruiz; K. Graf; C. Guidi; L. Haegel; S. Hallmann; H. van Haren; A. J. Heijboer; Y. Hello; J. J. Hernández-Rey; J. Hößl; J. Hofestädt; F. Huang; G. Illuminati; C. W. James; B. Jisse-Jung; M. de Jong p; P. de Jong; M. Kadler; O. Kalekin; U. Katz; A. Kouchner; I. Kreykenbohm; V. Kulikovskiy; R. Lahmann; M. Lamoureux; A. Lazo; D. Lefèvre; E. Leonora; G. Levi; S. Le Stum; D. Lopez-Coto; S. Loucatos; L. Maderer; J. Manczak; M. Marcelin; A. Margiotta; A. Marinelli; J. A. Martínez-Mora; P. Migliozzi; A. Moussa; R. Muller; L. Nauta; S. Navas; A. Neronov; E. Nezri; B. Ó Fearraigh; A. Păun; G. E. Păvălaş; M. Perrin-Terrin; V. Pestel; P. Piattelli; C. Poire'; V. Popa; T. Pradier; N. Randazzo; D. Real; S. Reck; G. Riccobene; A. Romanov; A. Sánchez-Losa; A. Saina; F. Salesa Greus; D. F. E. Samtleben; M. Sanguineti; P. Sapienza; D. Savchenko; J. Schnabel; J. Schumann; F. Schüssler; J. Seneca; M. Spurio; Th. Stolarczyk; M. Taiuti; Y. Tayalati; S. J. Tingay; B. Vallage; G. Vannoye; V. Van Elewyck; S. Viola; D. Vivolo; J. Wilms; S. Zavatarelli; A. Zegarelli; J. D. Zornoza; J. Zúñiga;handle: 11386/4843772 , 2117/388081
Interactions of cosmic ray protons, atomic nuclei, and electrons in the interstellar medium in the inner part of the Milky Way produce a γ-ray flux from the Galactic Ridge. If the γ-ray emission is dominated by proton and nuclei interactions, a neutrino flux comparable to the γ-ray flux is expected from the same sky region. Data collected by the ANTARES neutrino telescope are used to constrain the neutrino flux from the Galactic Ridge in the 1-100 TeV energy range. Neutrino events reconstructed both as tracks and showers are considered in the analysis and the selection is optimized for the search of an excess in the region |l| <30◦, |b| <2◦. The expected background in the search region is estimated using an off-zone region with similar sky coverage. Neutrino signal originating from a power-law spectrum with spectral index ranging from ν=1to 4is simulated in both channels. The observed energy distributions are fitted to constrain the neutrino emission from the Ridge. The energy distributions in the signal region are inconsistent with the background expectation at ∼96%confidence level. The mild excess over the background is consistent with a neutrino flux with a power law with a spectral index 2.45+0.22−0.34and a flux normalization dNνdEν=4.0+2.7−2.0×10−16GeV−1cm−2s−1sr−1at 40 TeV reference energy. Such flux is consistent with the expected neutrino signal if the bulk of the observed γ-ray flux from the Galactic Ridge originates from interactions of cosmic ray protons and nuclei with a power-law spectrum extending well into the PeV energy range Consiliul National al Cercetarii Stiintifice (CNCS) Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI) ANR-10-LABX-0023 ANR-18-IDEX-0001 Arab Fund for Economic and Social Development ASFAE/2022/023 ASFAE/2022/014 PROMETEO/2020/019 GENT/2018/034 GENT/2019/043 GENT/2020/049 GENT/2021/23 P18-FR-5057 101025085 Ministry of Higher Education, Scientific Research and Training, Morocco PID2021-124591NB-C41 PID2021-124591NB-C42 PID2021-124591NB-C43 Programa Maria Zambrano (Spanish Ministry of Universities by the European Union, NextGenerationEU), Spain "European Union NextGenerationEU/PRTR", Programa de Planes Complementarios I+D+I Netherlands Organization for Scientific Research (NWO) Netherlands Government Centre National de la Recherche Scientifique (CNRS) Federal Ministry of Education & Research (BMBF) Istituto Nazionale di Fisica Nucleare (INFN) Marie Curie Actions European Union (EU) GenT of the Generalitat Valenciana Region Provence-Alpes-Cpte d'Azur Region Provence-Alpes-Cote d'Azur French Atomic Energy Commission ERDF A way of making Europe Junta de Andalucia 754496 European Union (EU) Programa Prometeo Region Grand-Est Labex UnivEarthS EU: MSC program MCIN/AEI
Archivio istituziona... arrow_drop_down Repositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaUPCommons. Portal del coneixement obert de la UPCOther literature type . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInfoscience - EPFL scientific publicationsOther literature typeData sources: Infoscience - EPFL scientific publicationsUPCommons. Portal del coneixement obert de la UPCArticle . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di SalernoHAL Clermont Université; Hyper Article en Ligne; Mémoires en Sciences de l'Information et de la Communication; HAL AMU; HAL-CEAOther literature type . Article . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 7 citations 7 popularity Top 10% influence Average impulse Top 10% Powered by BIP!visibility 39visibility views 39 download downloads 10 Powered bymore_vert Archivio istituziona... arrow_drop_down Repositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaUPCommons. Portal del coneixement obert de la UPCOther literature type . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInfoscience - EPFL scientific publicationsOther literature typeData sources: Infoscience - EPFL scientific publicationsUPCommons. Portal del coneixement obert de la UPCArticle . 2023 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di SalernoHAL Clermont Université; Hyper Article en Ligne; Mémoires en Sciences de l'Information et de la Communication; HAL AMU; HAL-CEAOther literature type . Article . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2023 France, Spain, France, France, Spain, ItalyPublisher:Springer Science and Business Media LLC Funded by:ANR | DAEMONS, ANR | UnivEarthS, ANR | Université de ParisANR| DAEMONS ,ANR| UnivEarthS ,ANR| Université de ParisAiello S.; Albert A.; Alves Garre S.; Aly Z.; Ambrosone A.; Ameli F.; Andre M.; Anghinolfi M.; Anguita M.; Ardid M.; Ardid S.; Aublin J.; Bagatelas C.; Bailly-Salins L.; Baret B.; Pree S. B.; Becherini Y.; Bendahman M.; Benfenati F.; Berbee E.; Bertin V.; Biagi S.; Boettcher M.; Cabo M. B.; Boumaaza J.; Bouta M.; Bouwhuis M.; Bozza C.; Branzas H.; Bruijn R.; Brunner J.; Bruno R.; Buis E.; Buompane R.; Busto J.; Caiffi B.; Calvo D.; Campion S.; Capone A.; Carenini F.; Carretero V.; Castaldi P.; Celli S.; Cerisy L.; Chabab M.; Chau N.; Chen A.; Moursli R. C. E.; Cherubini S.; Chiarella V.; Chiarusi T.; Circella M.; Cocimano R.; Coelho J. A. B.; Coleiro A.; Coniglione R.; Coyle P.; Creusot A.; Cruz A.; Cuttone G.; Dallier R.; Darras Y.; De Benedittis A.; De Martino B.; Burgo R. D.; Palma I. D.; Diaz A. F.; Diego-Tortosa D.; Distefano C.; Domi A.; Donzaud C.; Dornic D.; Dorr M.; Drakopoulou E.; Drouhin D.; Eberl T.; Eddyamoui A.; Eeden T.; Eff M.; Eijk D.; Bojaddaini I. E.; Hedri S. E.; Enzenhofer A.; Espinosa V.; Ferrara G.; Filipovic M. D.; Filippini F.; Fusco L. A.; Gabriel J.; Gal T.; Mendez J. G.; Soto A. G.; Garufi F.; Oliver C. G.; Geisselbrecht N.; Gialanella L.; Giorgio E.; Girardi A.; Goos I.; Gozzini S. R.; Gracia R.; Graf K.; Guderian D.; Guidi C.; Guillon B.; Gutierrez M.; Haegel L.; Haren H.; Heijboer A.; Hekalo A.; Hennig L.; Hernandez-Rey J. J.; Huang F.; Ibnsalih W. I.; Illuminati G.; James C. W.; Janezashvili D.; de Jong M.; de Jong P.; Jung B. J.; Kalaczynski P.; Kalekin O.; Katz U. F.; Chowdhury N. R. K.; Kistauri G.; Knaap F.; Kooijman P.; Kouchner A.; Kulikovskiy V.; Labalme M.; Lahmann R.; Lakhal A.; Lamoureux M.; Larosa G.; Lastoria C.; Lazo A.; Breton R. L.; Stum S. L.; Lehaut G.; Leonora E.; Lessing N.; Levi G.; Liang S.; Clark M. L.; Longhitano F.; Maderer L.; Majumdar J.; Manczak J.; Margiotta A.; Marinelli A.; Markou C.; Martin L.; Martinez-Mora J. A.; Martini A.; Marzaioli F.; Mastrodicasa M.; Mastroianni S.; Melis K. W.; Micciche S.; Miele G.; Migliozzi P.; Migneco E.; Mijakowski P.; Mollo C. M.; Morales-Gallegos L.; Morley-Wong C.; Moussa A.; Muller R.; Musone M. R.; Musumeci M.; Nauta L.; Navas S.; Nicolau C. A.; Nkosi B.; Fearraigh B. O.; Orlando A.; Oukacha E.; Gonzalez J. P.; Papalashvili G.; Papaleo R.; Pastor Gomez E. J.; Paun A. M.; Pavalas G. E.; Pellegrino C.; Pena Martinez S.; Perrin-Terrin M.; Perronnel J.; Pestel V.; Piattelli P.; Pisanti O.; Poire C.; Popa V.; Pradier T.; Pulvirenti S.; Quemener G.; Rahaman U.; Randazzo N.; Razzaque S.; Rea I. C.; Real D.; Greus F. S.; Losa A. S.; Sanguineti M.; Spisso B.; Stavropoulos D.; Taiuti M.; Wilms J.; Yepes-Ramirez H.; Zito D.; Zuniga J.;handle: 2117/387671 , 11591/497808 , 11386/4843771 , 11567/1155939
This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Units deployed at the bottom of the Mediterranean Sea, each composed of 18 Digital Optical Modules. The shadows induced by the Moon and the Sun were detected at their nominal position with a statistical significance of 4.2 and 6.2 , and an angular resolution of and , respectively, consistent with the prediction of from simulations. This early result confirms the effectiveness of the detector calibration, in time, position and orientation and the accuracy of the event direction reconstruction. This also demonstrates the performance and the competitiveness of the detector in terms of pointing accuracy and angular resolution. Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Universita e della Ricerca (MIUR), PRIN 2017 program Italy NAT-NET 2017W4HA7S GenT of the Generalitat Valenciana CIDEGENT/2018/034 CIDEGENT/2019/043 CIDEGENT/2020/049 CIDEGENT/2021/23 Programa Maria Zambrano (Spanish Ministry of Universities - European Union, NextGenerationEU), Spain Center for Forestry Research & Experimentation (CIEF) ASFAE/2022/023 ASFAE/2022/014 Netherlands Organization for Scientific Research (NWO) Netherlands Government Ministry of Higher Education, Scientific Research and Innovation, Morocco MCIN/AEI PID2021-124591NB-C41 PID2021-124591NB-C42 PID2021-124591NB-C43 Programa Prometeo of the Generalitat Valenciana PROMETEO/2020/019 LabEx UnivEarthS, France ANR-10-LABX-0023 ANR-18-IDEX-0001 National Authority for Scientific Research (ANCS), Romania Agence Nationale de la Recherche (ANR) ANR-15-CE31-0020 Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF), France Junta de Andalucia SOMM17/6104/UGR P18-FR-5057 Arab Fund for Economic and Social Development Commission Europeenne (FEDER fund), France Marie Curie Actions European Union (EU) Greek Ministry of Development-GSRT Paris ile-de-France Region, France German Research Foundation (DFG) National Science Centre, Poland ERDF A way of making Europe EU: MSC program 101025085 European Union (EU)
UPCommons. Portal de... arrow_drop_down UPCommons. Portal del coneixement obert de la UPCOther literature type . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCUPCommons. Portal del coneixement obert de la UPCArticle . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCRepositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaEuropean Physical Journal C: Particles and FieldsArticle . 2023 . Peer-reviewedLicense: CC BYData sources: CrossrefArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di Salernohttps://doi.org/10.48550/arxiv...Article . 2022License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!visibility 19visibility views 19 download downloads 7 Powered bymore_vert UPCommons. Portal de... arrow_drop_down UPCommons. Portal del coneixement obert de la UPCOther literature type . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCUPCommons. Portal del coneixement obert de la UPCArticle . 2023License: CC BY NC NDData sources: UPCommons. Portal del coneixement obert de la UPCRepositorio Institucional Universidad de GranadaArticle . 2023Data sources: Repositorio Institucional Universidad de GranadaEuropean Physical Journal C: Particles and FieldsArticle . 2023 . Peer-reviewedLicense: CC BYData sources: CrossrefArchivio della Ricerca - Università di SalernoArticle . 2023Data sources: Archivio della Ricerca - Università di Salernohttps://doi.org/10.48550/arxiv...Article . 2022License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Narváez, D. F.; Samaniego, Pablo; Koga, Kenneth, T.; Rose-Koga, Estelle, F.; Hidalgo, S.; Ratzov, G.;The origin of several geochemical parameters in continental arc lavas (e.g., La/Yb, Ba/Th) is controversial as to whether it is imparted by the slab or acquired in the crust. In Ecuador, where volcanoes are built over a thick crust (~50 km), this problem is grounded in the lack of primitive rocks. Here, we use melt inclusions hosted in Fo80–90 olivines to decipher the slab component signatures that metasomatises the sub-arc mantle. We report major, trace, and volatile elements analyzed in experimentally heated melt inclusions, which are from primitive rocks of Cotacachi, Cubilche, Cono de la Virgen, Conos de Licto, and Sangay volcanoes located in the north and south of the Ecuadorian arc. Based on trace element data and geochemical modeling, we recognize two types of slab components: one is indicative of aqueous fluids (e.g., high Ba/La, Pb/Ce, B/Nb), and the other is indicative of hydrous siliceous melts (e.g., high La/Nb, Th/Nb). The aqueous fluid signature is recognized in all volcanoes (except for Cono de la Virgen), and their F/Cl are distributed around 0.43 ± 0.07, independent of the distance to the Benioff zone. We propose a model where hydrous siliceous melts result from the subduction of a young oceanic crust north of the Grijalva fracture zone. Additionally, we show that the mantle under Licto and Sangay volcanoes is enriched prior to metasomatism by slab fluids. This study shows that melt inclusions give valuable insights into the composition of primitive melts that are rarely accessible as whole rocks.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Funded by:ANR | CLERVOLC, ANR | Université de ParisANR| CLERVOLC ,ANR| Université de ParisOryaëlle Chevrel; Pauline Verdurme; Charles Le Losq; Salomé Pannefieu; Etienne Médard; Carole Berthod; Jean-Christophe Komorowski; Patrick Bachèlery; Daniel R. Neuville; Lucia Gurioli;Following an unprecedented seismic activity that started in May 2018, a new volcanic edifice, now called Fani Maoré, was constructed on the ocean floor 50 km east of the island of Mayotte (Indian Ocean). This volcano is the latest addition to a volcanic chain characterized by an alkaline basanite-to-phonolite magmatic differentiation trend. Here, we performed viscosity measurements on five silicate melts representative of the East-Mayotte Volcanic Chain compositional trend: two basanites from Fani Maoré, one tephriphonolite and two phonolites from different parts of the volcanic chain. A concentric cylinder viscometer was employed at super-liquidus conditions between 1500 K and 1855 K and a creep apparatus was used for measuring the viscosity of the undercooled melts close to the glass transition temperature in the air. At super-liquidus temperatures, basanites have the lowest viscosity (0.11–0.34 to 0.99–1.16 log10 Pa⸱s), phonolites the highest (1.75–1.91 to 3.10–3.89 log10 Pa⸱s), while the viscosity of the tephriphonolite falls in between (0.89–1.97 log10 Pa⸱s). Near the glass transition, viscosity measurements have only been performed for one phonolite melt because obtaining pure glass samples for the basanite and tephriphonolite compositions was unsuccessful. This was due to the formation of nanolites upon quench as evidenced by Raman spectroscopy. The phonolite viscosity ranges from of 10.19 log10 Pa⸱s at 1058 K to 12.30 log10 Pa⸱s at 986 K. Comparison with existing empirical models revealed an underestimation of 1.2 to 2.0 log units at super-liquidus and undercooled temperatures, respectively, for the phonolite. This emphasizes (i) the lack of data falling along the alkaline basanite-to-phonolite magmatic differentiation trend to calibrate empirical models, and (ii) the complexity of modeling viscosity variations as a function of temperature and chemical composition for alkaline compositions. The new measurements indicate that, at eruptive temperatures between 1050 °C and 1150 °C (1323–1423 K), the oxidized, anhydrous, crystal-free and bubble-free basanite melt is very fluid, presenting a viscosity around 2.6 log10 Pa⸱s. In contrast, the anhydrous phonolite crystal- and bubble-free melt would have a viscosity around 6–10 log10 Pa⸱s at expected eruptive temperatures, which range from 800 to 1000 °C (1073–1273 K). Considering that both basanite and phonolite lavas from the Mayotte submarine volcanic chain contain <6% crystals and a significant amount of water, such viscosity values are probably upper limits. The new viscosity measurements are essential to define eruptive models and to better understand the storage and transport dynamics of Comoros Archipelago magmas, and of alkaline magmas in general, from the source to the surface.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Elsevier BV Thivet, Simon; Hess, Kai-Uwe; Dingwell, Donald; Berthod, Carole; Gurioli, Lucia; Di Muro, Andrea; Lacombe, Tristan; Komorowski, Jean-Christophe;In July 2018, a large (ca. 6.55 km3), deep (ca. 2.5 to 3.3 km b.s.l) submarine eruption started ca. 50 km east of Mayotte Island. Samples of fresh basanitic lava rims were collected by dredging, at various times and locations from the newly formed Fani Maoré Edifice (FME). The logistical response to this extraordinary event also enabled the dredging of shallow (ca. 1.2 to 1.6 km below sea level, b.s.l.), fresh phonolitic lava and bomb rims in the so-called Horse-Shoe Area (HSA), ca. 15 km east of Mayotte. Better-known subaerial counterparts of Holocene age, have also been sampled in the La Vigie Maar (LVM) phonolitic deposits (Petite-Terre, Mayotte Island), for comparison with submarine samples. These samples belong to a single volcanic chain that extends from LVM to FME passing through HSA. A novel combination of Simultaneous Thermal Analysis (STA), which involves Differential Scanning Calorimetry (DSC), Thermal Gravimetry Analysis (TGA), and Evolved Gas Analysis conducted by Mass Spectrometry (EGA-MS), enable a reconstruction of the volatile distributions and compositions (H2O, CO2, and SO2) of these samples. Calorimetric and degassing profiles of controlled heating runs reveal different volatile reservoirs distributed as a function of sample textures and compositions, which have been further investigated by Scanning Electron Microscopy (SEM), Electron Probe Micro-Analysis (EPMA), and Raman spectroscopy. A linear correlation observed between the TGA and H2O-EGA-MS signal intensities also enables the quantification of adsorbed-external vs. dissolved-magmatic H2O contents of the studied samples. The novel application of this approach to volcanic products is thus confirmed as a reliable method to determine volatile characteristics in a wide range of samples, yielding a quantitative description of volatile behavior within the associated magmatic systems and eruptions.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2023Data sources: ArchiMer - Institutional Archive of Ifremeradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Cellule MathDoc/CEDRAM Authors: Puzenat, Valentine; Feuillet, Nathalie; Komorowski, Jean-Christophe; Escartín, Javier; +16 AuthorsPuzenat, Valentine; Feuillet, Nathalie; Komorowski, Jean-Christophe; Escartín, Javier; Deplus, Christine; Bachèlery, Patrick; Berthod, Carole; Gurioli, Lucia; Scalabrin, Carla; Cathalot, Cécile; Rinnert, Emmanuel; Loubrieu, Benoît; Pierre, Delphine; Pitel-Roudaut, Mathilde; Tanguy, Nina; Fouquet, Yves; Jorry, Stephan, J; Lebas, Elodie; Paquet, Fabien; Thinon, Isabelle;doi: 10.5802/crgeos.175
International audience; Unlike subaerial volcanic activity, deep submarine eruptions are difficult to detect, observe and monitor. The objective of this paper is to describe a large and complex volcanic region, named the Horseshoe area, recently discovered at 1500 m below sea level on the eastern upper submarine slope of Mayotte Island. The area is crucial because, since 2018, it has experienced an exceptionally deep seismic activity associated with the ongoing submarine eruption that formed a new volcanic edifice, Fani Maoré, about 40 km to the east. We present the results of a multiscale study, based on high-resolution bathymetry and in-situ seafloor observations carried out with autonomous underwater vehicles (AUVs) and deep-towed camera systems. In-situ imagery provides ground-truth for the geological interpretation of seafloor textures mapped with the bathymetry. The combination of both datasets allows us to discuss the nature of the volcanic structures and to propose a relative chronology of previous eruptive events in the Horseshoe area. Based on our analyses, we propose the following chronology: (a) the emplacement of a large explosive volcanic cone, the Horseshoe edifice, (b) the later collapse of this edifice that resulted in the formation of an elongated, 2 km wide horseshoe-shaped depression, crosscutting older hummocky lava flows, (c) the development of an E–W eruptive fissure associated with numerous explosive craters, east of the Horseshoe edifice, and (d) late volcanism emanating from the rim of the horseshoe-shaped depression that fed elongated thin lava flows both towards and away from the depression. While all volcanic features mapped at the Horseshoe area were emplaced prior to the 2018 eruption, our study shows that this region has still been volcanically active in the recent past. Our results thus document a complex geological history at small spatial scales involved in the construction of major submarine edifices, and that are controlled by volcano-tectonic processes at larger scales.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2022Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYFull-Text: https://hal.science/hal-03957790/documentHAL Clermont Université; HAL-IRDArticle . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2022Data sources: ArchiMer - Institutional Archive of IfremerHAL Clermont Université; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BYFull-Text: https://hal.science/hal-03957790/documentHAL Clermont Université; HAL-IRDArticle . 2023add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2023 FrancePublisher:Cellule MathDoc/CEDRAM Funded by:ANR | COYOTESANR| COYOTESJerome van der Woerd; Nicolas Mercury; Anne Lemoine; Cécile Doubre; Didier Bertil; Roser Hoste Colomer; Jean Battaglia;International audience; From 10 May 2018 to 1 November 2022 (time of writing), an unprecedented seismic activity is observed east of Mayotte Island (France), related to the largest submarine eruption ever recorded with offshore geophysical studies. Using signals from regional and local seismic stations, we build a comprehensive catalog of the local seismicity for the first ten months of the sequence. This catalog includes a total of 2874 events of magnitude (Mlv) ranging from 2.4 to 6.0, with 77% of them relocated using a double difference location procedure. The hypocentral locations over this period are highly dependent on the small seismic network available. Therefore we compare the locations of later events using a similar network and those estimated from a local ocean bottom seismometer (OBS) network installed since March 2019. Based on the time space evolution and characteristics of the seismicity, five distinct phases can be identified, corresponding to the successive activation of two deep seismic swarms, related to the lithospheric-scale magma ascent up to the seafloor, along with progressive deepening of the seismicity interpreted as decompression of a 40 km deep reservoir.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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