Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Edouard Ravier"'
Ribbed bedforms, markers of palaeo-ice stream margins, basal meltwater drainage and ice flow dynamic
Autor:
Edouard Ravier, Nigel Atkinson, David Peigné, Olivier Bourgeois, Stéphane Pochat, Chris D. Clark, Thomas Lelandais, Paul Bessin, Jean Vérité, Régis Mourgues
Over the three last decades, great efforts have been undertaken by the glaciological community to characterize the behaviour of ice streams and better constrain the dynamics of ice sheets. Studies of modern ice stream beds reveal crucial information
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::019fa82ba37a87682e93b9cc16818d36
https://doi.org/10.5194/egusphere-egu21-9526
https://doi.org/10.5194/egusphere-egu21-9526
Autor:
Felix Ng, Stephen J. Livingstone, Jean Vérité, Christopher Clark, Isabelle McMartin, Robert D. Storrar, Emma L. M. Lewington, Nico Dewald, Andrew Sole, Edouard Ravier
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Edouard Ravier
Publikováno v:
Proceedings of the Geologists' Association. 132:526-527
Publikováno v:
Marine and Petroleum Geology
Marine and Petroleum Geology, Elsevier, 2020, 122, pp.104643. ⟨10.1016/j.marpetgeo.2020.104643⟩
Marine and Petroleum Geology, 2020, 122, pp.104643. ⟨10.1016/j.marpetgeo.2020.104643⟩
Marine and Petroleum Geology, Elsevier, 2020, 122, pp.104643. ⟨10.1016/j.marpetgeo.2020.104643⟩
Marine and Petroleum Geology, 2020, 122, pp.104643. ⟨10.1016/j.marpetgeo.2020.104643⟩
International audience; Bed-parallel, mineralized fractures are common in source rocks and generally consist in mm to cm thick veins developed parallel to bedding known as beef or bedding-parallel veins. Considering they can form a dense network of m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0064b52d8ccc3f1d7906801471da437
https://hal-insu.archives-ouvertes.fr/insu-02922274/file/ravier-2020.pdf
https://hal-insu.archives-ouvertes.fr/insu-02922274/file/ravier-2020.pdf
Autor:
David Peigné, Olivier Bourgeois, Nigel Atkinson, Régis Mourgues, Chris D. Clark, Paul Bessin, Thomas Lelandais, Jean Vérité, Edouard Ravier, Stéphane Pochat
Conceptual ice stream landsystems derived from geomorphological and sedimentological observations provide constraints on ice-meltwater-till-bedrock interactions on palaeo-ice stream beds. Within these landsystems, the spatial distribution and formati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cca2560a700f0adae63037d6e612d958
https://tc.copernicus.org/preprints/tc-2020-336/
https://tc.copernicus.org/preprints/tc-2020-336/
Publikováno v:
Journal of Glaciology, Vol 69, Pp 860-878 (2023)
Surging and streaming of glaciers are modulated by meltwater availability and pressure which controls mechanical coupling at their beds. Using laboratory-scale experimental modelling and palaeoglaciological mapping, we explore how subglacial drainage
Externí odkaz:
https://doaj.org/article/49b291ac6b6b4f6884e2bda11c064a65
Experimental modeling of pressurized subglacial water flow: Implications for tunnel valley formation
Autor:
Régis Mourgues, Stéphane Pochat, Olivier Bourgeois, Pierre Strzerzynski, Thomas Lelandais, Edouard Ravier
Publikováno v:
Journal of Geophysical Research: Earth Surface. 121:2022-2041
Tunnel valleys are elongated hollows commonly found in formerly glaciated areas and interpreted as resulting from subglacial meltwater erosion beneath ice sheets. Over the past two decades, the number of studies of terrestrial tunnel valleys has cont
Publikováno v:
Sedimentary Geology. 344:57-70
A key aspect of all subglacial tills is the nature and form of microstructures present. Microstructures are symptomatic of repeated deformation phases prior to, during, and after emplacement. Critical to understanding microstructures in subglacial ti
Publikováno v:
Sedimentary Geology. 338:84-96
The formation of drumlins remains a major enigma. It is accepted that drumlins form under active temperate ice most likely within a soft sediment deforming bed at ephemeral ‘sticky points’. These ‘sticky points’ likely lead to the causative m