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102. Co-activation of rhythms during alpha band oscillations as an interictal biomarker of exploding head syndrome

Author

Fotis Sakellariou, Dimitris, primary, Nesbitt, Alexander David, additional, Higgins, Sean, additional, Beniczky, Sandor, additional, Rosenzweig, Jan, additional, Drakatos, Panagis, additional, Gildeh, Nadia, additional, Murphy, Patrick Brian, additional, Kent, Brian, additional, Williams, Adrian John, additional, Kryger, Meir, additional, Goadsby, Peter J, additional, Leschziner, Guy Doron, additional, and Rosenzweig, Ivana, additional

Published
2020
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109. EUSeaMap 2019, A European broad-scale seabed habitat map, technical report

Author

Vasquez, Mickael, Manca, Eleonora, Inghilesi, Roberto, Martin, Simon, Agnesi, Sabrina, Al Hamdani, Zyad, Annunziatellis, Aldo, Bekkby, Trine, Pesch, Roland, Askew, Natalie, Bentes, Luis, Castle, Lewis, Doncheva, Valentina, Drakopoulou, Vivi, Gonçalves, Jorge, Laamanen, Leena, Lillis, Helen, Loukaidi, Valia, Mcgrath, Fergal, Mo, Giulia, Monteiro, Pedro, Muresan, Mihaela, O'Keeffe, Eimear, Populus, Jacques, Pinder, Jordan, Ridgeway, Amy, Sakellariou, Dimitris, Simboura, Mika, Teaca, Adrian, Tempera, Fernando, Todorova, Valentina, Tunesi, Leonardo, and Virtanen, Elina

Abstract

EUSeaMap 2019 is the third iteration of EUSeaMap. All versions have been produced as part of the EMODnet Seabed Habitats project, which is one of several thematic lots in EMODnet. The project has brought together a European consortium of specialists in benthic ecology and seabed habitat mapping. The partners first collaborated in EMODnet phase 1 (2009-2012) to deliver a prototype predictive seabed habitat map in four trial basins (Greater North Sea, Celtic Seas, Baltic, Western Mediterranean). This predictive model was named EUSeaMap (Cameron and Askew, 2011). In EMODnet Phase 2 (2012-2016), the consortium extended EUSeaMap coverage to all European regions (Populus et al, 2017). In the new version, the spatial coverage was extended further North in order to include the Barents Sea. The spatial detail was substantially improved. This was made possible by improvements to the physical predictor variables created by the other EMODnet lots which are the input data to the EUSeaMap model. A substantial revision of the map creation process has also been carried out in order to make it more reproducible. This document describes all these modifications which have led to the elaboration of EUSeaMap 2019.

Published
2020

110. Carbon-proton chemical shift correlation in solid-state NMR by through-bond multiple-quantum spectroscopy

Author

Lesage, Anne, Sakellariou, Dimitris, Steuernagel, Stefan, and Emsley, Lyndon

Subjects
Carbon -- Research, Protons -- Research, Photon correlation -- Research, Chemical bonds -- Research, Solid state chemistry -- Research, Chemistry
Abstract

A novel two-dimensional proton-carbon chemical shift correlation experiment based on a polarization transfer using heteronuclear J(subscript CH) couplings was proposed for natural abundance rotating solids. The two-dimensional map provides through-bond chemical shift correlations between directly bonded proton-carbon pairs in a way similar to that in corresponding high-resolution liquid-state experiments. The transfer was found to be efficient and more selective than those based on heteronuclear dipolar couplings.

Published
1998

112. Chapter 9 - Greece

Author

Simboura, Nomiki, Maragou, Panagiota, Paximadis, Giorgos, Kapiris, Kostas, Papadopoulos, Vassilis P., Sakellariou, Dimitris, Pavlidou, Alexandra, Hatzianestis, Ioannis, Salomidi, Maria, Arvanitidis, Christos, and Panayotidis, Panayotis

Published
2019
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119. Picking Up the Pieces—Harmonising and Collating Seabed Substrate Data for European Maritime Areas

Author

Kizildag, Nilhan, Green, Sophie, Cooper, Rhys, Kjellin, Bernt, Miko, Slobodan, Cela, Teresa Medialdea, McKeon, Charise, Marku, Sokol, Kint, Lars, Mueller, Alexander Mirko, Kanopiene, Roma, Kaulbarsz, Dorota, Ergun, Mustafa, Ion, Gabriel, Jansone, Agnese, Jeglinski, Wojciech, Judge, Maria, Kramarska, Regina, Kumeli, Spela, Leder, Nenad, Leon, Ricardo, Leth, Jorgen, Loureiro, Marisa, Lourenco, Nuno, Lowndes, Jonathan, Marincea, Stefan, Gonzalez, Javier, Grigelis, Algimantas, Glaves, Helen, Hallberg, Ola, Hardy, David, Hjartarson, Arni, Moreno, Julia Gimenez, Morisseau, Eleni Georgiou, Gelumbauskite, Leonora, Hojgaard, Bartal, Hume, Duncan, Ilijanic, Nikolina, Galea, Charles, Fiorentino, Andrea, Erlendsson, Ogmundur, Eihenberga, Antra, Dumitras, Delia, Drakopoulou, Paraskevi, Doda, Viktor, Dimitrov, Lyubomir, Diesing, Markus, D'Angelo, Silvana, Damusyte, Aldona, Damrat, Mateusz, Cyziene, Jolanta, Crmaric, Ranko, Costea, Constantin, ÇİFCİ, GÜNAY, Cheshenko, Nataliia, Celarc, Bogomir, Cato, Ingemar, Caruana, Albert, Carrara, Gabri, Bukovska, Ieva, Brikmane, Baiba, Muinos, Susana Bolhao, Bo, Reidulv, Battaglini, Loredana, Auerbach, Julie, Asch, Kristine, Al-Hamdani, Zyad, Abrantes, Fatima, Stevenson, Alan, Van Lancker, Vera, Kihlman, Susanna, van Heteren, Sytze, Guinan, Janine, Alanen, Ulla, Kotilainen, Aarno Tapio, Kaskela, Anu Marii, Suuroja, Sten, Somoza, Luis, Minkevicius, Vytautas, Zomeni, Zomenia, Zhamoida, Vladimir, Zeiler, Manfred, Zavitsanou, Alexandra, Zananiri, Irene, Zalachori, Aspasia, Vink, Annemiek, Vikingsson, Skuli, Verbruggen, Koen, Vandeven, Tamara, Valerii, Rokitskyi, Vallius, Henry, Uscinowicz, Szymon, Tsoumparaki-Kraounaki, Konstantina, Thorsnes, Terje, Thinon, Isabelle, Terrinha, Pedro, Tellez-Arenas, Agnes, Snezhko, Viktor, Simplet, Laure, Shadrina, Tatjana, Selboskar, Odd Harald, Satkunas, Jonas, Sakellariou, Dimitris, Ryabchuk, Daria, Raznatovic, Ivana, Radusinovic, Slobodan, Przezdziecki, Piotr, Persa, Diana, Pambuku, Arben, Paquet, Fabien, Osharin, Sergii, Olsen, Heidi, Nyberg, Johan, Nulle, Inara, Moses, Cherith, and Mortensen, Lis

Subjects
0106 biological sciences, Seabed substrate, 010504 meteorology & atmospheric sciences, Marine geology, Geological Survey Netherlands, Confidence, Sample (statistics), scale, data gaps, European seas, EMODnet, 01 natural sciences, Spatial, Seafloor mapping, 14. Life underwater, 2015 Energy, Seabed, marine geology, seafloor mapping, seabed substrate, harmonisation, confidence, spatial scale, 0105 earth and related environmental sciences, Harmonisation, business.industry, 010604 marine biology & hydrobiology, lcsh:QE1-996.5, Environmental resource management, Marine spatial planning, Substrate (marine biology), lcsh:Geology, Data access, 13. Climate action, Obstacle, General Earth and Planetary Sciences, business, Scale (map), Geology
Abstract

The poor access to data on the marine environment is a handicap to government decision-making, a barrier to scientific understanding and an obstacle to economic growth. In this light, the European Commission initiated the European Marine Observation and Data Network (EMODnet) in 2009 to assemble and disseminate hitherto dispersed marine data. In the ten years since then, EMODnet has become a key producer of publicly available, harmonised datasets covering broad areas. This paper describes the methodologies applied in EMODnet Geology project to produce fully populated GIS layers of seabed substrate distribution for the European marine areas. We describe steps involved in translating national seabed substrate data, conforming to various standards, into a uniform EMODnet substrate classification scheme (i.e., the Folk sediment classification). Rock and boulders form an additional substrate class. Seabed substrate data products at scales of 1:250,000 and 1:1 million, compiled using descriptions and analyses of seabed samples as well as interpreted acoustic images, cover about 20% and 65% of the European maritime areas, respectively. A simple confidence assessment, based on sample and acoustic coverage, is helpful in identifying data gaps. The harmonised seabed substrate maps are particularly useful in supraregional, transnational and pan-European marine spatial planning. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.

Published
2019
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120. Marine Transform Faults and Fracture Zones: A Joint Perspective Integrating Seismicity, Fluid Flow and Life

Author

Hensen, C., Duarte, João C., Vannucchi, P., Mazzini, Adriano, Lever, Mark A., Terrinha, Pedro, Géli, Louis, Henry, Pierre, Villinger, Heinrich, Morgan, Jason, Schmidt, Mark, Gutscher, Marc-André, Bartolomé, Rafael, Tomonaga, Yama, Polonia, Alina, Gràcia, Eulàlia, Tinivella, Umberta, Lupi, Matteo, Çağatay, M. Namık, Elvert, Marcus, Sakellariou, Dimitris, Matias, L., Kipfer, R., Karageorgis, A.P., Ruffine, Livio, Liebetrau, Volker, Pierre, C., Schmidt, Christopher, Batista, Luis, Gasperini, Luca, Burwicz, Ewa, Neres, Marta, Nuzzo, Marianne, GEOMAR - Helmholtz Centre for Ocean Research [Kiel] (GEOMAR), Instituto Dom Luiz, Universidade de Lisboa (ULISBOA), University of London [London], Università degli Studi di Firenze [Firenze], University of Oslo (UiO), Department of Environmental Systems Science [ETH Zürich] (D-USYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Instituto Português de Investigação do Mar e da Atmosfera (IPMA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), University of Bremen, Laboratoire Géosciences Océan (LGO), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Spain] (CSIC), Swiss Federal Insitute of Aquatic Science and Technology [Dübendorf] (EAWAG), Istituto di Scienze Marine [Bologna] (ISMAR), Istituto di Science Marine (ISMAR ), Consiglio Nazionale delle Ricerche (CNR)-Consiglio Nazionale delle Ricerche (CNR), Istituto Nazionale di Geofisica e di Oceanografia Sperimentale (OGS), University of Geneva [Switzerland], Istanbul Technical University, Hellenic Centre for Marine Research (HCMR), Cycles biogéochimiques marins : processus et perturbations (CYBIOM), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), EU-funded COST Action FLOWS (ES1301, Research Council of Norway, European Commission, and Fundação para a Ciência e a Tecnologia (Portugal)

Subjects
microbial life, seafloor observation systems, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], Coupling of seismicity and fluid flow, Seafloor observation systems, Seafloor observation systems, Coupling of seismicity and fluid flow, heat flow, fluid geochemistry, ddc:550, seismic precursors, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics, fractures zones, Heat flow, coupling of seismicity and fluid flow, Transform faults, Fractures zones, transform faults, Fluid geochemistry, Heat flow, Microbial life, Seismic precursors, Fuid geochemistry
Abstract

29 pages, 12 figures, Marine transform faults and associated fracture zones (MTFFZs) cover vast stretches of the ocean floor, where they play a key role in plate tectonics, accommodating the lateral movement of tectonic plates and allowing connections between ridges and trenches. Together with the continental counterparts of MTFFZs, these structures also pose a risk to human societies as they can generate high magnitude earthquakes and trigger tsunamis. Historical examples are the Sumatra-Wharton Basin Earthquake in 2012 (M8.6) and the Atlantic Gloria Fault Earthquake in 1941 (M8.4). Earthquakes at MTFFZs furthermore open and sustain pathways for fluid flow triggering reactions with the host rocks that may permanently change the rheological properties of the oceanic lithosphere. In fact, they may act as conduits mediating vertical fluid flow and leading to elemental exchanges between Earth’s mantle and overlying sediments. Chemicals transported upward in MTFFZs include energy substrates, such as H2 and volatile hydrocarbons, which then sustain chemosynthetic, microbial ecosystems at and below the seafloor. Moreover, up- or downwelling of fluids within the complex system of fractures and seismogenic faults along MTFFZs could modify earthquake cycles and/or serve as “detectors” for changes in the stress state during interseismic phases. Despite their likely global importance, the large areas where transform faults and fracture zones occur are still underexplored, as are the coupling mechanisms between seismic activity, fluid flow, and life. This manuscript provides an interdisciplinary review and synthesis of scientific progress at or related to MTFFZs and specifies approaches and strategies to deepen the understanding of processes that trigger, maintain, and control fluid flow at MTFFZs, JD acknowledges an FCT Researcher contract, an exploratory project grant ref. IF/00702/2015, and the FCT project UID/ GEO/50019/2013-IDL. LG acknowledges the bilateral ANR/TÜBITAK collaborative research project MAREGAMI (ANR-16-CE03-0010-02 and Tübitak Project 116Y371). AM acknowledges the European Research Council under the Seventh Framework Programme (grant agreement 308126, LUSI LAB) and the Research Council of Norway (Centers of Excellence funding scheme 223272)

Published
2019
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122. Seismic profiles across the North Anatolian Fault in the Aegean Sea

Author

Rodriguez, Mathieu, Sakellariou, Dimitris, Gorini, Christian, Chamot-Rooke, Nicolas, d'Acremont, Elia, Nercessian, Alexandre, Tsampouraki Kraounaki, Konstantina, Oregioni, Davide, Delescluse, Matthias, Janin, Alexandre, Laboratoire de géologie de l'ENS (LGE), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris), Hellenic Center for Marine Research (HCMR), Institut des Sciences de la Terre de Paris (iSTeP), Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Physique du Globe de Paris (IPGP), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS), Observatoire de la Côte d'Azur (OCA), Centre National de la Recherche Scientifique (CNRS), Laboratoire de géologie de l'ENS (LGENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), and Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU]Sciences of the Universe [physics], [SDU.STU]Sciences of the Universe [physics]/Earth Sciences
Abstract

International audience; The North Anatolian Fault (NAF) is a >1200 km-long continental strike-slip fault system, acting as the plate boundary between Eurasia and Anatolia. West of the Yeniçaga fork in Turkey, the NAF divides in two main strands: the Main Marmara Fault crossing the Marmara Sea to the North, and a southern branch of the NAF crossing the Biga Peninsula. Both strands end in the Aegean Sea, connecting conspicuous horsetail terminations offshore eastern Greece at the North Aegean Trough and off Skyros Island. The northern Aegean Sea is therefore a key area to understand the structural evolution of the North Anatolian strike-slip fault system since its formation in the Late Miocene. Stratigraphic markers in the Aegean Sea provide optimal conditions for the study of the fault system evolution at the time scale of 105-106 years. Here we present a new set of shallow seismic reflection data crossing the NAF in the northern Aegean Sea, acquired in July 2017 onboard the R/V Tethys II (INSUCNRS/IFREMER). The penetration of the seismic signal reaches the Messinian unconformity. This new datasetallows us to investigate the sub-surface structure of the fault system and to identify key unconformities related to the formation of the horsetail terminations in the Late Pliocene-Early Pleistocene. These new elements will help to better understand the structural evolution of the NAF in the framework of back arc extension in the Aegean Sea since the Late Miocene.

Published
2018

124. Association of the 894G>T polymorphism in the endothelial nitric oxide synthase gene with risk of acute myocardial infarction

Author

Foussas Stefanos G, Sakellariou Dimitris C, Gialafos Elias J, Zairis Michalis N, Richter Dimitris J, Zervou Sevasti I, Tzeis Stylianos E, Grammatopoulos Dimitris K, Andrikopoulos George K, Manolis Antonis S, Stefanadis Christodoulos I, Toutouzas Pavlos K, and Hillhouse Edward W

Subjects
Internal medicine, RC31-1245, Genetics, QH426-470
Abstract

Abstract Background This study was designed to investigate the association of the 894G>T polymorphism in the eNOS gene with risk of acute myocardial infarction (AMI), extent of coronary artery disease (CAD) on coronary angiography, and in-hospital mortality after AMI. Methods We studied 1602 consecutive patients who were enrolled in the GEMIG study. The control group was comprised by 727 individuals, who were randomly selected from the general adult population. Results The prevalence of the Asp298 variant of eNOS was not found to be significantly and independently associated with risk of AMI (RR = 1.08, 95%CI = 0.77–1.51, P = 0.663), extent of CAD on angiography (OR = 1.18, 95%CI = 0.63–2.23, P = 0.605) and in-hospital mortality (RR = 1.08, 95%CI = 0.29–4.04, P = 0.908). Conclusion In contrast to previous reports, homozygosity for the Asp298 variant of the 894G>T polymorphism in the eNOS gene was not found to be associated with risk of AMI, extent of CAD and in-hospital mortality after AMI

Published
2008
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125. Marine Transform Faults and Fracture Zones: A Joint Perspective Integrating Seismicity, Fluid Flow and Life

Author

Hensen, Christian, Duarte, Joao C., Vannucchi, Paola, Mazzini, Adriano, Lever, Mark A., Terrinha, Pedro, Géli, Louis, Henry, Pierre, Villinger, Heinrich, Morgan, Jason, Schmidt, Mark, Gutscher, Marc-andre, Bartolome, Rafael, Tomonaga, Yama, Polonia, Alina, Gràcia, Eulàlia, Tinivella, Umberta, Lupi, Matteo, Çağatay, M. Namık, Elvert, Marcus, Sakellariou, Dimitris, Matias, Luis, Kipfer, Rolf, Karageorgis, Aristomenis P., Ruffine, Livio, Liebetrau, Volker, Pierre, Catherine, Schmidt, Christopher, Batista, Luis, Gasperini, Luca, Burwicz, Ewa, Neres, Marta, Nuzzo, Marianne, Hensen, Christian, Duarte, Joao C., Vannucchi, Paola, Mazzini, Adriano, Lever, Mark A., Terrinha, Pedro, Géli, Louis, Henry, Pierre, Villinger, Heinrich, Morgan, Jason, Schmidt, Mark, Gutscher, Marc-andre, Bartolome, Rafael, Tomonaga, Yama, Polonia, Alina, Gràcia, Eulàlia, Tinivella, Umberta, Lupi, Matteo, Çağatay, M. Namık, Elvert, Marcus, Sakellariou, Dimitris, Matias, Luis, Kipfer, Rolf, Karageorgis, Aristomenis P., Ruffine, Livio, Liebetrau, Volker, Pierre, Catherine, Schmidt, Christopher, Batista, Luis, Gasperini, Luca, Burwicz, Ewa, Neres, Marta, and Nuzzo, Marianne

Abstract

Marine transform faults and associated fracture zones (MTFFZs) cover vast stretches of the ocean floor, where they play a key role in plate tectonics, accommodating the lateral movement of tectonic plates and allowing connections between ridges and trenches. Together with the continental counterparts of MTFFZs, these structures also pose a risk to human societies as they can generate high magnitude earthquakes and trigger tsunamis. Historical examples are the Sumatra-Wharton Basin Earthquake in 2012 (M8.6) and the Atlantic Gloria Fault Earthquake in 1941 (M8.4). Earthquakes at MTFFZs furthermore open and sustain pathways for fluid flow triggering reactions with the host rocks that may permanently change the rheological properties of the oceanic lithosphere. In fact, they may act as conduits mediating vertical fluid flow and leading to elemental exchanges between Earth’s mantle and overlying sediments. Chemicals transported upward in MTFFZs include energy substrates, such as H2 and volatile hydrocarbons, which then sustain chemosynthetic, microbial ecosystems at and below the seafloor. Moreover, up- or downwelling of fluids within the complex system of fractures and seismogenic faults along MTFFZs could modify earthquake cycles and/or serve as “detectors” for changes in the stress state during interseismic phases. Despite their likely global importance, the large areas where transform faults and fracture zones occur are still underexplored, as are the coupling mechanisms between seismic activity, fluid flow, and life. This manuscript provides an interdisciplinary review and synthesis of scientific progress at or related to MTFFZs and specifies approaches and strategies to deepen the understanding of processes that trigger, maintain, and control fluid flow at MTFFZs.

Published
2019
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126. Marine Transform Faults and Fracture Zones: A Joint Perspective Integrating Seismicity, Fluid Flow and Life

Author

Research Council of Norway, European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Hensen, C., Duarte, João C., Vannucchi, P., Mazzini, Adriano, Lever, Mark A., Terrinha, Pedro, Géli, Louis, Henry, Pierre, Villinger, Heinrich, Morgan, Jason, Schmidt, Mark, Gutscher, Marc-André, Bartolomé, Rafael, Tomonaga, Yama, Polonia, Alina, Gràcia, Eulàlia, Tinivella, Umberta, Lupi, Matteo, Çağatay, M. Namık, Elvert, Marcus, Sakellariou, Dimitris, Matias, L., Kipfer, R., Karageorgis, Aristomenis P., Ruffine, Livio, Liebetrau, Volker, Pierre, C., Schmidt, Christopher, Batista, Luis, Gasperini, Luca, Burwicz, Ewa, Neres, Marta, Nuzzo, Marianne, Research Council of Norway, European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Hensen, C., Duarte, João C., Vannucchi, P., Mazzini, Adriano, Lever, Mark A., Terrinha, Pedro, Géli, Louis, Henry, Pierre, Villinger, Heinrich, Morgan, Jason, Schmidt, Mark, Gutscher, Marc-André, Bartolomé, Rafael, Tomonaga, Yama, Polonia, Alina, Gràcia, Eulàlia, Tinivella, Umberta, Lupi, Matteo, Çağatay, M. Namık, Elvert, Marcus, Sakellariou, Dimitris, Matias, L., Kipfer, R., Karageorgis, Aristomenis P., Ruffine, Livio, Liebetrau, Volker, Pierre, C., Schmidt, Christopher, Batista, Luis, Gasperini, Luca, Burwicz, Ewa, Neres, Marta, and Nuzzo, Marianne

Abstract

Marine transform faults and associated fracture zones (MTFFZs) cover vast stretches of the ocean floor, where they play a key role in plate tectonics, accommodating the lateral movement of tectonic plates and allowing connections between ridges and trenches. Together with the continental counterparts of MTFFZs, these structures also pose a risk to human societies as they can generate high magnitude earthquakes and trigger tsunamis. Historical examples are the Sumatra-Wharton Basin Earthquake in 2012 (M8.6) and the Atlantic Gloria Fault Earthquake in 1941 (M8.4). Earthquakes at MTFFZs furthermore open and sustain pathways for fluid flow triggering reactions with the host rocks that may permanently change the rheological properties of the oceanic lithosphere. In fact, they may act as conduits mediating vertical fluid flow and leading to elemental exchanges between Earth’s mantle and overlying sediments. Chemicals transported upward in MTFFZs include energy substrates, such as H2 and volatile hydrocarbons, which then sustain chemosynthetic, microbial ecosystems at and below the seafloor. Moreover, up- or downwelling of fluids within the complex system of fractures and seismogenic faults along MTFFZs could modify earthquake cycles and/or serve as “detectors” for changes in the stress state during interseismic phases. Despite their likely global importance, the large areas where transform faults and fracture zones occur are still underexplored, as are the coupling mechanisms between seismic activity, fluid flow, and life. This manuscript provides an interdisciplinary review and synthesis of scientific progress at or related to MTFFZs and specifies approaches and strategies to deepen the understanding of processes that trigger, maintain, and control fluid flow at MTFFZs

Published
2019

128. EUSeaMap. A European broad-scale seabed habitat map

Author

Populus, Jacques, Vasquez, Mickael, Albrecht, James, Manca, Eleonora, Agnesi, Sabrina, Al Hamdani, Zyad, Andersen, Jesper, Annunziatellis, Aldo, Bekkby, Trine, Bruschi, Antonello, Doncheva, Valentina, Drakopoulou, Vivi, Duncan, Graeme, Inghilesi, Roberto, Kyriakidou, Chara, Lalli, Francesco, Lillis, Helen, Mo, Giulia, Muresan, Mihaela, Salomidi, Maria, Sakellariou, Dimitris, Simboura, Mika, Teaca, Adrian, Tezcan, Devrim, Todorova, Valentina, and Tunesi, Leonardo

Abstract

In order to most benefit from the potential offered by the European marine basins in terms of growth and employment (Blue Growth), and to protect the marine environment, we need to know more about the seafloor. European Directives, such as the MSFD, but also the Horizon 2020 roadmap explicitly called for a multi-resolution full coverage of all European seas including bathymetry, geology and habitats. The present work, following on a suite of past initiatives, has made a big step forward in this direction. It has first boosted the collation of existing maps from surveys by setting up a framework and a procedure to encourage people to submit their maps and data. This resulted in a more attractive EMODnet seabed habitat portal and a snowball effect with more and more people willing to join. However, collation will eventually come to an end and as new creations of seabed habitat maps are so complex and time-consuming, a cost-efficient way to meet the need for a full-coverage habitat map was found to be low-resolution maps and models to predict seafloor habitat types. The broad-scale map referred to as EUSeaMap has been created by this project and after the first two phases it now covers all European basins from the Barents Sea to Macaronesia and to the Black Sea. By harmonising mapping procedures - based on the EUNIS classification - and fostering a common understanding among seabed mappers in Europe, EUSeaMap provides today the community with a comprehensive, free and ready-to-use map that can find applications at regional scale for management and conservation issues. Tables and maps for all basins can be found in section 3 “Results and disciussions”. The project has played a key role in giving feedback to other EMODnet communities dealing with bathymetry, geology and biology, all essential data sources for the broad-scale map. It has also improved the understanding of the EUNIS habitat classification - with a focus on the Adriatic and the Black Sea - by better specifying transitions between classes based on benthic ground-truth data. It has fostered the development of oceanographic variables such as light, waves and currents that have a strong bearing on habitats. Finally it has also been instrumental in developing map confidence assessment methods that account for the broad spatial variation in data sources quality and for uncertain boundaries between habitat classes. The EUSeaMap methods are repeatable and ensure that the predictive maps can continue to be improved in the future, as a result either of EUNIS enhancements or increase in resolution. From today’s 250m resolution it is likely that new deliveries of enhanced source layers due to steady progress in oceanography and geophysics will enable constant refinement of the maps over time.

Published
2017

134. Time-resolved, optically detected NMR of fluids at high magnetic field.

Author

Pagliero, Daniela, Dong, Wei, Sakellariou, Dimitris, and Meriles, Carlos A.

Subjects
FLUID mechanics, NUCLEAR magnetic resonance, MAGNETIC fields, FARADAY effect, NUCLEAR spin, COUPLING constants, SOFT condensed matter
Abstract

We report on the use of optical Faraday rotation to monitor the nuclear-spin signal in a set of model 19F- and 1H-rich fluids. Our approach integrates optical detection with high-field, pulsed NMR so as to record the time-resolved evolution of nuclear-spins after rf excitation. Comparison of chemical-shift-resolved resonances allows us to set order-of-magnitude constrains on the relative amplitudes of hyperfine coupling constants for different bonding geometries. When evaluated against coil induction, the present detection modality suffers from poorer sensitivity, but improvement could be attained via multipass schemes. Because illumination is off-resonant i.e., the medium is optically transparent, this methodology could find extensions in a broad class of fluids and soft condensed matter systems. [ABSTRACT FROM AUTHOR]

Published
2010
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135. Diffusion damping during adiabatic z-rotation pulses for NMR spectroscopy in inhomogeneous magnetic fields.

Author

Topgaard, Daniel and Sakellariou, Dimitris

Subjects
*INHOMOGENEOUS materials, *MAGNETIC fields, *NUCLEAR magnetic resonance, *MAGNETIC resonance, *DIFFUSION
Abstract

High-resolution nuclear magnetic resonance spectra from samples located in inhomogeneous static and radio frequency magnetic fields can be obtained by applying a train of z-rotation radio frequency pulses to repeatedly refocus the inhomogeneous broadening during signal detection. z-rotation pulses based on an adiabatic double passage are effective over wide bandwidths using a limited amount of radio frequency power at the expense of being time consuming and, consequently, sensitive to motion of the spin bearing molecules. The signal damping resulting from molecular self-diffusion during the pulse was studied experimentally and using Brownian dynamics simulations. The results show that the analytical expression for diffusion damping during a double spin echo is a reasonable approximation for the signal decay during an adiabatic z-rotation pulse. Methods to alleviate the effects of diffusion are discussed. [ABSTRACT FROM AUTHOR]

Published
2006
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136. Rotary resonance recoupling for half-integer quadrupolar nuclei in solid-state nuclear magnetic resonance spectroscopy.

Author

Wi, Sungsool, Logan, John W., Sakellariou, Dimitris, Walls, Jamie D., and Pines, Alexander

Subjects
ANISOTROPY, SPIN-spin interactions, NUCLEAR magnetic resonance spectroscopy
Abstract

Investigations were made of rotary resonance recouplings (R[SUP3]) of chemical shift anisotropy (CSA), heteronuclear dipolar (HTD), and homonuclear dipolar (HMD) couplings involving half-integer quadrupolar nuclei under magic-angle sample spinning condition. Under rotary resonance conditions provided by a low amplitude rf field and a high spinning speed, the spectrum of the central transition coherence of half-integer quadrupolar nuclei shows recouplings of CSA, HTD, and HMD interactions that depend on the ratio of the rf field to the spinning speed. These new properties can be used to extract electronic and structural information about the sample that are otherwise difficult to extract in the presence of a dominant quadrupolar interaction. An average Hamiltonian theory is used to explain the recoupling properties of various interactions. Experimental implementations of the R[SUP3] are demonstrated on model compounds with spin-3/2 systems. [ABSTRACT FROM AUTHOR]

Published
2002
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138. Ultra-wide range field-dependent measurements of the relaxivity of Gd$_{1-x}$Eu$_x$VO$_4$ nanoparticle contrast agents using a mechanical sample- shuttling relaxometer

Author

Chou, Ching-Yu, Abdesselem, Mouna, Bouzigues, Cedric, Chu, Minglee, Guiga, Angelo, Huang, Tai-Huang, Ferrage, Fabien, Gacoin, Thierry, Alexandrou, Antigoni, Sakellariou, Dimitris, Structure et Dynamique des Biomolécules, Laboratoire des biomolécules (LBM), École normale supérieure - Paris (ENS Paris) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS) - École normale supérieure - Paris (ENS Paris) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) - Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Optique et Biosciences (LOB), Polytechnique - X - Institut National de la Santé et de la Recherche Médicale (INSERM) - Centre National de la Recherche Scientifique (CNRS), Academia Sinica, Institute of Biomedical sciences, Laboratoire de physique de la matière condensée (LPMC), Polytechnique - X - Centre National de la Recherche Scientifique (CNRS), European Project : 205119, EC:FP7:ERC, ERC-2007-StG, R-EVOLUTION-M-R(2008), and European Project : 279519, EC:FP7:ERC, ERC-2011-StG_20101014, 2F4BIODYN(2012)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry
Abstract

International audience; The current trend for Magnetic Resonance Imaging points towards higher magnetic fields. Even though sensitivity and resolution are increased in stronger fields, T1 contrast is often reduced, and this represents a challenge for contrast agent design. Field-dependent measurements of relaxivity are thus important to characterize contrast agents. At present, the field-dependent curves of relaxivity are usually carried out in the field range of 0 T to 2 T, using fast field cycling relaxometers. Here, we employ a high-speed sample shuttling device to switch the magnetic fields experienced by the nuclei between virtually zero field, and the center of any commercial spectrometer. We apply this approach on rare-earth (mixed Gadolinium-Europium) vanadate nanoparticles, and obtain the dispersion curves from very low magnetic field up to 11.7 T. In contrast to the relaxivity profiles of Gd chelates, commonly used for clinical applications, which display a plateau and then a decrease for increasing magnetic fields, these nanoparticles provide maximum contrast enhancement for magnetic fields around 1–1.5 T. These field-dependent curves are fitted using the so-called Magnetic Particle (MP) model and the extracted parameters discussed as a function of particle size and composition. We finally comment on the new possibilities offered by this approach.

Published
2017
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140. The Mw 6.6, July 21, 2017 Kos Earthquake. Scientific Report (Version 2.0)

Author

Efthymis Lekkas, Panayotis Carydis, Mavroulis, Spyridon, Marilia Gogou, Andreadakis Emmanuel, Katerina-Navsika Katsetsiadou, Skourtsos, Emmanuel, Minos-Minopoulos, Despina, Bardouli, Pavlina, Voulgaris, Nicholas, Panayotis Papadimitriou, Kaviris, George, Akis Tselentis, Karakonstantis, Andreas, Is. Parcharidis, Papastergios, Asterios, Tsironi, Varvara, Lalechos, Spyridon, Avramea, Vassiliki, Kleanthi, Maria, Papaioannou, Christos, Salonikios, Thomas N., Adam, Nikolaos, and Sakellariou, Dimitris

Published
2017
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141. Ultra-wide range field-dependent measurements of the relaxivity of Gd1−xEuxVO4 nanoparticle contrast agents using a mechanical sample-shuttling relaxometer

Author

Chou, Ching-Yu, Abdesselem, Mouna, Bouzigues, Cedric, Chu, Minglee, Guiga, Angelo, Huang, Tai-Huang, Ferrage, Fabien, Gacoin, Thierry, Alexandrou, Antigoni, Sakellariou, Dimitris, Structure et Dynamique des Biomolécules (LBM-E3), Laboratoire des biomolécules (LBM UMR 7203), Université Pierre et Marie Curie - Paris 6 (UPMC)-Département de Chimie - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Département de Chimie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Optique et Biosciences (LOB), École polytechnique (X)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Academia Sinica, Laboratoire de physique de la matière condensée (LPMC), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Département de Chimie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Département de Chimie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École polytechnique (X), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), and HAL-UPMC, Gestionnaire

Subjects
[CHIM] Chemical Sciences, [CHIM]Chemical Sciences, Article
Abstract

The current trend for Magnetic Resonance Imaging points towards higher magnetic fields. Even though sensitivity and resolution are increased in stronger fields, T1 contrast is often reduced, and this represents a challenge for contrast agent design. Field-dependent measurements of relaxivity are thus important to characterize contrast agents. At present, the field-dependent curves of relaxivity are usually carried out in the field range of 0 T to 2 T, using fast field cycling relaxometers. Here, we employ a high-speed sample shuttling device to switch the magnetic fields experienced by the nuclei between virtually zero field, and the center of any commercial spectrometer. We apply this approach on rare-earth (mixed Gadolinium-Europium) vanadate nanoparticles, and obtain the dispersion curves from very low magnetic field up to 11.7 T. In contrast to the relaxivity profiles of Gd chelates, commonly used for clinical applications, which display a plateau and then a decrease for increasing magnetic fields, these nanoparticles provide maximum contrast enhancement for magnetic fields around 1-1.5 T. These field-dependent curves are fitted using the so-called Magnetic Particle (MP) model and the extracted parameters discussed as a function of particle size and composition. We finally comment on the new possibilities offered by this approach. ispartof: Scientific Reports vol:7 pages:1-12 ispartof: location:England status: published

Published
2017
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142. Novel applications of permanent magnets and small coils in Nuclear Magnetic Resonance

Author

Sakellariou, Dimitris, Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Palacin, Serge, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

147. What's Left to Spin? Spinning Samples, Coils and Magnets for High-Resolution NMR of Heterogeneous Samples

Author

Sakellariou, Dimitris, Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Palacin, Serge, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

148. The Deep‐water corals of Cyprus: Environmental settings and ecological features (CYprus Cold‐corals Levantine SeA, Eastern MEditerraneaN: CYCLAMEN)

Author

Orejas, Covadonga, Abu-Alhaija, Rana, Achilleos, Katerina, Avgousti, Avgostinos, Aurelle, Didier, Ferrier-Pagès, Christine, Gori, Andrea, Hadjioannou, Louis, Kamidis, Nikolaos, Lo-Iacono, Claudio, Petrou, Antonis, Reynaud, Stéphanie, Rottier, Cécile, and Sakellariou, Dimitris

Subjects
Centro Oceanográfico de Baleares, Cyprus, Medio Marino, Levantine Mediterranean, Cold-water corals (CWC)
Abstract

The recently started research project CYCLAMEN (CYprus Cold-corals Levantine SeA, Eastern MEditerraneaN), will conduct the first detailed study of cold-water coral communities in eastern Cypriot waters. Cold-water coral habitats have been found during exploratory surveys. The 2-yr long project will include the environmental characterization of the area, as well as the study of the spatial distribution of cold-water coral communities. In addition to the study of the biology of the coral species, genetic and eco-physiological studies will be included. This project is the first of its kind in Cyprus and will additionally have an associated scientific outreach programme in order to bring these ecosystems, still poorly known, to the general public. The project is led by the Spanish Institute of Oceanography (IEO), and relies on the participation of research Institutions in Cyprus: The Cyprus Institute (CyI) and the NGO Enalia Physis Environmental Research Centre (EPERC); France: Aix-Marseille University – Mediterranean Institute for Biodiversity & Ecology (AMU-IMBE); Greece: The Hellenic Centre for Marine Research (HCMR); Mónaco: Centre Scientifique de Monaco (CSM); United Kingdom: National Oceanography Centre (NOC), and Spain: Universitat de Barcelona (UB). Here we present the conceptual frame of the project, the background knowledge and the first obtained results in the oceanographic cruise carried out in summer 2015.

Published
2015

149. Pre-clinical magic angle field spinning MRI magnet for localized NMR spectroscopy

Author

Sakellariou, Dimitris, Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Palacin, Serge

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

150. The Kallisti Limnes, carbon dioxide-accumulating subsea pools

Author

Camilli, Richard, Nomikou, Paraskevi, Escartín, Javier, Ridao Rodríguez, Pere, Mallios, Angelos, Kilias, Stephanos P., Argyraki, Ariadne, Andreani, Muriel, Ballu, Valerie, Campos Dausà, Ricard, Deplus, Christine, Gabsi, Taoufic, García Campos, Rafael, Grácias, Nuno Ricardo Estrela, Hurtós Vilarnau, Natàlia, Magí Carceller, Lluís, Mével, Catherine, Moreira, Manuel, Palomeras Rovira, Narcís, Pot, Olivier, Ribas Romagós, David, Ruzié, Lorraine, Sakellariou, Dimitris, Faculty of Geology & Geoenvironment, Institut de Physique du Globe de Paris (IPGP), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), LIttoral ENvironnement et Sociétés (LIENSs), and La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010504 meteorology & atmospheric sciences, Geochemistry, Volcanic Eruptions, 010502 geochemistry & geophysics, 01 natural sciences, Hydrothermal circulation, Article, Water column, Caldera, Seawater, 14. Life underwater, 0105 earth and related environmental sciences, geography, Multidisciplinary, geography.geographical_feature_category, Fons marins, Greece, Ecology, Ocean bottom, Carbon Dioxide, Seafloor spreading, Volcano, Carbon dioxide, 13. Climate action, Benthic zone, [SDU]Sciences of the Universe [physics], Environmental science, Anhídrid carbònic, Hydrothermal vent
Abstract

Natural CO2 releases from shallow marine hydrothermal vents are assumed to mix into the water column and not accumulate into stratified seafloor pools. We present newly discovered shallow subsea pools located within the Santorini volcanic caldera of the Southern Aegean Sea, Greece, that accumulate CO2 emissions from geologic reservoirs. This type of hydrothermal seafloor pool, containing highly concentrated CO2, provides direct evidence of shallow benthic CO2 accumulations originating from sub-seafloor releases. Samples taken from within these acidic pools are devoid of calcifying organisms and channel structures among the pools indicate gravity driven flow, suggesting that seafloor release of CO2 at this site may preferentially impact benthic ecosystems. These naturally occurring seafloor pools may provide a diagnostic indicator of incipient volcanic activity and can serve as an analog for studying CO2 leakage and benthic accumulations from subsea carbon capture and storage sites.

Published
2015
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