A5083762411- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies
- earthquake and tectonic studies
- Atmospheric and Environmental Gas Dynamics
- Geological Studies and Exploration
- Cryospheric studies and observations
- Marine and environmental studies
- Maritime and Coastal Archaeology
- Maritime Transport Emissions and Efficiency
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Underwater Acoustics Research
- Oceanographic and Atmospheric Processes
- Offshore Engineering and Technologies
- Landslides and related hazards
- Reservoir Engineering and Simulation Methods
- Paleontology and Stratigraphy of Fossils
- Marine animal studies overview
- Pleistocene-Era Hominins and Archaeology
- Marine and Offshore Engineering Studies
- Arctic and Antarctic ice dynamics
- Spacecraft and Cryogenic Technologies
Géoazur
2014-2024
Centre National de la Recherche Scientifique
2019-2024
Institut des Sciences de la Terre de Paris
2022-2023
Pontifícia Universidade Católica do Rio Grande do Sul
2017-2023
Sorbonne Université
2022
National Institute of Oceanography and Applied Geophysics
2009-2021
Universidade Federal Fluminense
2018-2021
Servicio Geológico Minero Argentino
2018
Université du Québec à Montréal
2007
Bedford Institute of Oceanography
1991-2007
The BRITICE‐CHRONO consortium of researchers undertook a dating programme to constrain the timing advance, maximum extent and retreat British–Irish Ice Sheet between 31 000 15 years before present. campaign across Ireland Britain their continental shelves, North Sea included 1500 days field investigation yielding 18 km marine geophysical data, 377 cores sea floor sediments, geomorphological stratigraphical information at 121 sites on land; generating 690 new geochronometric ages. These...
Abstract Ocean warming related to climate change has been proposed cause the dissociation of gas hydrate deposits and methane leakage on seafloor. This process occurs in places where edge stability zone sediments meets overlying warmer oceans upper slope settings. Here we present new evidence based analysis a large multi-disciplinary multi-scale dataset from such location western South Atlantic, which records massive release ocean. The results provide unique opportunity examine ocean-hydrate...
The regional Quaternary seismo-stratigraphy of NW Gulf St. Lawrence, based on 5700 line km high resolution seismic reflection profiles, is described. sequence can be locally missing or exceed 1.3 in thickness. Five major stratigraphic units are recognized, which vary their character and distribution so that at any location a variety bedrock types may overlain by distinctive sequence. These relate to the advance retreat Late Wisconsinan Ice Sheet. We interpret these as: Unit 1, recording...
Cold Seep
A regional stratigraphic framework for the Neogene succession along and across NW European margin is presented, based on a seismic sample database. The stratigraphy provides constraints timing nature of mid- to late Cenozoic differential tectonic movements that have drivenmajor changes in sediment supply, oceanographic circulation climate (culminating continental glaciation). overall context deposition was established mid-Cenozoic, when rapid, km-scale subsidence (sagging) created...
The dynamics of the British-Irish Ice Sheet (BIIS) during Last Glacial were conditioned by marine-based ice streams, largest which far was Irish Sea Stream (ISIS) drained southwest across Celtic shelf. maximum extent and timing ISIS have been constrained onshore evidence from UK Ireland, glacigenic sediments encountered in a small suite vibrocores UK-Irish continental shelf, single radiocarbon date is available. These data long supported advance to at least mid-shelf, while recent results...
Discoveries of gas venting from the deep seafloor attract growing attention scientific community and energy industry, given their implications for transition greenhouse emissions. Understanding dynamics hydrate systems associated exudation processes is essential assessing potential environmental economic impacts. The Amazon River culminates in one world’s largest deep-sea fans, offering a natural laboratory to study migration expulsion within a rapidly-deposited...
The expulsion of gas-rich fluids from submarine sedimentary accumulations may result in the formation seafloor depressions, or pockmarks, metric to kilometric size. Methane flux drives biogeochemical processes favouring precipitation authigenic carbonates, which over time can form pavements high acoustic reflectivity. In deep waters, it has been proposed that morphology be influenced by gas hydrate and dissolution depressions complex internal relief, referred as ‘gas...
The Amazon River culminates in one a deep-sea fan up to 10 km thick, dynamic setting which the rapid deposition of organic-rich sediment drives linked processes methanogenesis, fluid migration and venting, gas hydrate formation, large-scale slope instability. Growth over last 8 Ma has been accompanied by its gravitational collapse on shale detachments form extensional compressional belts across shelf upper (96%) are
ABSTRACT The BRITICE‐CHRONO Project has generated a suite of recently published radiocarbon ages from deglacial sequences offshore in the Celtic and Irish seas terrestrial cosmogenic nuclide optically stimulated luminescence adjacent onshore sites. All data are integrated here with new geochronological Wales revised Bayesian analysis that enables reconstruction ice retreat dynamics across basin. Patterns changes pace deglaciation conditioned more by topographic constraints internal than...