Gueorgui Ratzov Maître de conférences en Géosciences Marines

Publications

Article dans une revue (38)

Sedimentary record of submarine gravity‐flow events in the southern Ryukyu forearc during the last 200 000 years: archive of mega‐earthquakes and tsunamis Nathalie Babonneau,Gueorgui Ratzov,Charlotte Guerin,Mira Richa,Serge Lallemandet al. Sedimentology, In press, ⟨10.1111/sed.70043⟩ Article dans une revue hal-05241940v1
Offshore Record of Explosive Volcanic Eruptions in the Southern Part of the Panamá Basin During the Past 10 Myr: 1. Tephrostratigraphy, Cross‐Correlations and Geochemical Characterization Mathilde Bablon,Marianne Saillard,François Michaud,François Nauret,Pablo Samaniegoet al. Geochemistry, Geophysics, Geosystems, 2025, 26 (9), ⟨10.1029/2025GC012276⟩ Article dans une revue hal-05270001v1
Origin and deposition of deepwater homogenites from a sedimentological perspective: Examples from offshore SW Taiwan Radha Krishna Pillutla,Andrew Tien-Shun Lin,Jen-Chu Yeh,Gueorgui Ratzov,Nathalie Babonneauet al. Sedimentary Geology, 2025, 480, pp.106854. ⟨10.1016/j.sedgeo.2025.106854⟩ Article dans une revue hal-05242137v1
A Possible Tsunamigenic Near‐Trench Strike‐Slip Fault, Offshore North Ecuador–South Colombia Jean-Yves Collot,Gueorgui Ratzov,F Michaud,A Galve,Jean-Noël Proustet al. Journal of Geophysical Research : Solid Earth, 2025, 130 (12), pp.e2024JB030779. ⟨10.1029/2024jb030779⟩ Article dans une revue (article de synthèse) insu-05440725v1
Offshore Record of Explosive Volcanic Eruptions in the Southern Part of the Panamá Basin During the Past 10 Myr: 2. Inferences About the Construction of the Northern Andean Arc and Regional Geodynamics Mathilde Bablon,Pablo Samaniego,Jean‐luc Le Pennec,François Nauret,François Michaudet al. Geochemistry, Geophysics, Geosystems, 2025, 26 (9), ⟨10.1029/2025GC012278⟩ Article dans une revue hal-05270003v1
Sedimentary Records in the Lesser Antilles Fore‐Arc Basins Provide Evidence of Large Late Quaternary Megathrust Earthquakes Chloé Seibert,Nathalie Feuillet,Gueorgui Ratzov,Christian Beck,P. Morenaet al. Geochemistry, Geophysics, Geosystems, 2024, 25 (2), pp.e2023GC011152. ⟨10.1029/2023GC011152⟩ Article dans une revue hal-04436131v1
Changes in marine sedimentation patterns in the northeastern South China Sea in the past 35,000 years Kuan-Ting Chen,Shu-Kun Hsu,Andrew Tien-Shun Lin,Chih-Chieh Su,Nathalie Babonneauet al. Communications Earth & Environment, 2024, 5 (1), pp.420. ⟨10.1038/s43247-024-01593-3⟩ Article dans une revue hal-04669283v1
Late Pleistocene charcoal-rich sediments in the Puerto Rico Trench, possible remnants of gigantic wildfires in North-Eastern South America Chloé Seibert,Christian Beck,Nathalie Feuillet,Eva Moreno,Denise Ponset al. Palaeogeography, Palaeoclimatology, Palaeoecology, 2024, 655, pp.112497. ⟨10.1016/j.palaeo.2024.112497⟩ Article dans une revue hal-04756190v1
Two types of slab components under Ecuadorian volcanoes supported by primitive olivine-hosted melt inclusion study Diego Narvaez,Pablo Samaniego,Kenneth T. Koga,Estelle F. Rose-Koga,S. Hidalgoet al. Lithos, 2023, 442-443, pp.107049. ⟨10.1016/j.lithos.2023.107049⟩ Article dans une revue insu-04197043v1
Structural evolution of the southern Ecuadorian forearc in the Santa Elena Peninsula region Cédric Bulois,Marianne Saillard,Nicolas Espurt,Pedro Reyes Benítez,François Michaudet al. Journal of South American Earth Sciences, 2023, 130, pp.104503. ⟨10.1016/j.jsames.2023.104503⟩ Article dans une revue hal-04233625v1
Fast-eroding Taiwan and transfer of orogenic sediment to forearc basins and trenches in the Philippine and South China seas Eduardo Garzanti,Kalyani Nayak,Marta Padoan,Giovanni Vezzoli,Alberto Resentiniet al. Earth-Science Reviews, 2023, 244, pp.104523. ⟨10.1016/j.earscirev.2023.104523⟩ Article dans une revue hal-05268965v1
An innovative isotopic method to identify the volcanic source of distal tephra Mathilde Bablon,François Nauret,Marianne Saillard,Pablo Samaniego,Ivan Vlastélicet al. Earth and Planetary Science Letters, 2023, 619, pp.118283. ⟨10.1016/j.epsl.2023.118283⟩ Article dans une revue hal-04171645v1
Changes in Kuroshio Current dynamics and East Asian monsoon variability during the last 26 kyr Pierrick Fenies,Maria-Angela Bassetti,Natalia Vazquez Riveiros,Christophe Menniti,Clément Frigolaet al. Palaeogeography, Palaeoclimatology, Palaeoecology, 2023, 632, 111836 (16p.). ⟨10.1016/j.palaeo.2023.111836⟩ Article dans une revue hal-04498620v1
From long‐ to short‐term inter‐plate coupling at the subducted Carnegie Ridge crest, offshore Central Ecuador J‐Y Collot,J‐n. Proust,J‐m Nocquet,C. Martillo,F. Michaudet al. Journal of Geophysical Research : Solid Earth, 2022, 127 (8), pp.e2022JB024192. ⟨10.1029/2022JB024192⟩ Article dans une revue hal-03750721v2
Planktic-benthic foraminifera ratio (%P) as a tool for the reconstruction of paleobathymetry and geohazard: A case study from Taiwan Raúl Tapia,Sicheng Le,Sze Ling Ho,Maria-Angela Bassetti,In-Tian Linet al. Marine Geology, 2022, 453, pp.106922. ⟨10.1016/j.margeo.2022.106922⟩ Article dans une revue hal-05001128v1
Holocene marine tephra offshore Ecuador and Southern Colombia: First trench‐to‐arc correlations and implication for magnitude of major eruptions Mathilde Bablon,Gueorgui Ratzov,François Nauret,Pablo Samaniego,François Michaudet al. Geochemistry, Geophysics, Geosystems, 2022, 23 (9), pp.e2022GC010466. ⟨10.1029/2022GC010466⟩ Article dans une revue insu-03776996v1
Coexistence of Adjacent Siliciclastic, Carbonate, and Mixed Sedimentary Systems: An Example From Seafloor Morphology in the Northern Lesser Antilles Forearc Pierre Morena,Gueorgui Ratzov,Antonio Cattaneo,Frauke Klingelhoefer,Christian Becket al. Frontiers in Earth Science, 2022, 10, pp.834029. ⟨10.3389/feart.2022.834029⟩ Article dans une revue hal-03722078v1
Shallow gas hydrates off southwest Taiwan and their mechanisms Yin-Sheng Huang,Shu-Kun Hsu,Chih-Chieh Su,Andrew Tien-Shun Lin,Pai-Sen Yuet al. Marine Geophysical Research, 2021, 42 (1), pp.7. ⟨10.1007/s11001-021-09429-x⟩ Article dans une revue hal-03258221v1
New perspectives in studying active faults in metropolitan France: the “Active faults France” (FACT/ATS) research axis from the Resif-Epos consortium Jean-François Ritz,Stéphane Baize,Laurence Audin,Christine Authemayou,Fabien Graveleauet al. Comptes Rendus. Géoscience, 2021, 353 (S1), pp.381-412. ⟨10.5802/crgeos.98⟩ Article dans une revue hal-03546364v1
Clay-mineral distribution in recent deep-sea sediments around Taiwan: Implications for sediment dispersal processes Kalyani Nayak,Andrew Tien-Shun Lin,Kuo-Fang Huang,Zhifei Liu,Nathalie Babonneauet al. Tectonophysics, 2021, 814, pp.228974. ⟨10.1016/j.tecto.2021.228974⟩ Article dans une revue hal-03578555v1
Seafloor morphology and sediment transfer in the mixed carbonate-siliciclastic environment of the Lesser Antilles forearc along Barbuda to St. Lucia C. Seibert,N. Feuillet,G. Ratzov,C. Beck,Antonio Cattaneo Marine Geology, 2020, 428, pp.106242. ⟨10.1016/j.margeo.2020.106242⟩ Article dans une revue insu-03094044v1
The Esmeraldas Canyon: A Helpful Marker of the Pliocene‐Pleistocene Tectonic Deformation of the North Ecuador‐Southwest Colombia Convergent Margin J.‐y. Collot,G. Ratzov,P. Silva,Jean-Noël Proust,S. Migeonet al. Tectonics, 2019, 38 (8), pp.3140-3166. ⟨10.1029/2019TC005501⟩ Article dans une revue hal-02326448v1
A honeycomb seafloor morphology in carbonate sediment of the Carnegie Ridge (offshore Ecuador): Formation and potential geodynamic significance F. Michaud,J.Y. Collot,G. Ratzov,Jean-Noël Proust,A. Danoet al. Geology, 2018, 46 (11), pp.979-982. ⟨10.1130/G45285.1⟩ Article dans une revue hal-01946123v1
Turbidite chronostratigraphy off Algiers, central Algerian margin: A key for reconstructing Holocene paleo-earthquake cycles Nathalie Babonneau,Antonio Cattaneo,Gueorgui Ratzov,Jacques Déverchère,Abdelkarim Yelles-Chaoucheet al. Marine Geology, 2017, 384, pp.63 - 80. ⟨10.1016/j.margeo.2016.10.017⟩ Article dans une revue hal-01734516v1
Earthquake-triggered deposits in the subduction trench of the north Ecuador/south Colombia margin and their implication for paleoseismology S. Migeon,C. Garibaldi,G. Ratzov,S. Schmidt,J.-Y. Collotet al. Marine Geology, 2017, 384, pp.47 - 62. ⟨10.1016/j.margeo.2016.09.008⟩ Article dans une revue hal-01737588v1
An attempt to reconstruct 2700 years of seismicity using deep-sea turbidites offshore eastern Taiwan Remi Lehu,Serge Lallemand,Gueorgui Ratzov,Nathalie Babonneau,Shu-Kun Hsuet al. Tectonophysics, 2016, 692, pp.309-324. ⟨10.1016/j.tecto.2016.04.030⟩ Article dans une revue hal-01467627v1
Historical Reconstruction of Submarine Earthquakes Using Pb-210, Cs-137, and Am-241 Turbidite Chronology and Radiocarbon Reservoir Age Estimation off East Taiwan Laurent Dezileau,R. Lehu,Serge Lallemand,S-K Hsu,Nathalie Babonneauet al. Radiocarbon, 2016, 58 (1), pp.25-36. ⟨10.1017/RDC.2015.3⟩ Article dans une revue hal-01306986v1
An offshore-onland transect across the north-eastern Black Sea basin (Crimean margin): Evidence of Paleocene to Pliocene two-stage compression Yevgeniya Sheremet,Marc Sosson,Gueorgui Ratzov,Grigoriy Sydorenko,Zinoviy Voitsitskiyet al. Tectonophysics, 2016, 688, pp.84 - 100. ⟨10.1016/j.tecto.2016.09.015⟩ Article dans une revue hal-01744705v1
A similar to 3000 years-old sequence of extreme events revealed by marine and shore deposits east of Taiwan Serge Lallemand,Remi Lehu,Fabien Retif,Shu-Kun Hsu,Nathalie Babonneauet al. Tectonophysics, 2016, 692, pp.325-341. ⟨10.1016/j.tecto.2015.11.001⟩ Article dans une revue istex hal-01467640v1
Quaternary sedimentation and active faulting along the Ecuadorian shelf: preliminary results of the ATACAMES Cruise (2012) F. Michaud,Jean-Noël Proust,Jean-Yves Collot,Jean-Frederic Lebrun,C. Wittet al. Marine Geophysical Research, 2015, 36 (1), pp.81-98. ⟨10.1007/s11001-014-9231-y⟩ Article dans une revue insu-01131151v1
Deep-sea sedimentation offshore eastern Taiwan: Facies and processes characterization Remi Lehu,Serge Lallemand,Shu-Kun Hsu,Nathalie Babonneau,Gueorgui Ratzovet al. Marine Geology, 2015, 369, pp.1-18. ⟨10.1016/j.margeo.2015.05.013⟩ Article dans une revue istex hal-01277768v1
Holocene turbidites record earthquake supercycles at a slow-rate plate boundary Gueorgui Ratzov,A. Cattaneo,Nathalie Babonneau,Jacques Déverchère,K. Yelleset al. Geology, 2015, 43 (4), pp.331-334. ⟨10.1130/G36170.1⟩ Article dans une revue insu-01133376v1
Searching for the seafloor signature of the 21 May 2003 Boumerdès earthquake offshore central Algeria Antonio Cattaneo,Nathalie Babonneau,Gueorgui Ratzov,G. Dan-Unterseh,Karim Yelleset al. Natural Hazards and Earth System Sciences, 2012, 12, pp.2159-2172. ⟨10.5194/nhess-12-2159-2012⟩ Article dans une revue insu-00769974v1
Late Quaternary geomorphologic evolution of submarine canyons as a marker of active deformation on convergent margins: The example of the South Colombian margin, Gueorgui Ratzov,M. Sosson,J.-Y. Collot,S. Migeon Marine Geology, 2012, 315-318, pp.77-97. ⟨10.1016/j.margeo.2012.05.005⟩ Article dans une revue istex hal-00815438v1
The tsunami signature on a submerged promontory: the case study of the Atacames Promontory, Ecuador M. Ioualalen,Gueorgui Ratzov,J.-Y. Collot,E. Sanclemente Geophysical Journal International, 2011, 184 (2), pp.680-688. ⟨10.1111/j.1365-246X.2010.04878.x⟩ Article dans une revue hal-00585747v1
Active Deformation along the Southern End of the Tosco Abreojos Fault System: New Insights from Multibeam Swath Bathymetry, in Geodynamics of the Mexican Pacific Margin F. Michaud,T. Calmus,Gueorgui Ratzov,Jean-Yves Royer,M. Sossonet al. Pure and Applied Geophysics, 2011, 168 (8-9), pp.1363-1372. ⟨10.1007/s00024-010-0193-y⟩ Article dans une revue istex hal-00498287v1
Miocene to Messinian deformation and hydrothermal activity in a pre-alpine basement massif of the French Western Alps: New U-Th-Pb and Argon ages from the Lauzière massif Dominique Gasquet,Jean-Michel Bertrand,Jean-Louis Paquette,Jérémie Lehmann,Gueorgui Ratzovet al. Bulletin de la Société Géologique de France, 2010, 181 (3), pp.227-241. ⟨10.2113/gssgfbull.181.3.227⟩ Article dans une revue halsde-00467414v1
Mass-transport deposits in the northern Ecuador subduction trench: Result of frontal erosion over multiple seismic cycles Gueorgui Ratzov,J.-Y. Collot,M. Sosson,S. Migeon Earth and Planetary Science Letters, 2010, 296 (1-2), pp.89-102. ⟨10.1016/j.epsl.2010.04.048⟩ Article dans une revue istex hal-00498289v1