Laboratory simulations of Martian gullies on sand dunes
International audience Small gullies, observed on Mars, could be formed by groundwater seepage from an underground aquifer or may result from the melting of near-surface ground ice at high obliquity. To test these different hypotheses, a cold room-based laboratory simulation has been performed. The...
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ftinsu:oai:HAL:hal-01735572v1 2024-04-14T08:00:11+00:00 Laboratory simulations of Martian gullies on sand dunes Védie, Emeric Costard, F. Font, Marianne Lagarde, Jean-Louis Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2008 https://normandie-univ.hal.science/hal-01735572 https://normandie-univ.hal.science/hal-01735572/document https://normandie-univ.hal.science/hal-01735572/file/2008GL035638.pdf https://doi.org/10.1029/2008GL035638 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035638 hal-01735572 https://normandie-univ.hal.science/hal-01735572 https://normandie-univ.hal.science/hal-01735572/document https://normandie-univ.hal.science/hal-01735572/file/2008GL035638.pdf doi:10.1029/2008GL035638 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://normandie-univ.hal.science/hal-01735572 Geophysical Research Letters, 2008, 35 (21), pp.L21501. ⟨10.1029/2008GL035638⟩ [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.1029/2008GL035638 2024-03-21T17:17:23Z International audience Small gullies, observed on Mars, could be formed by groundwater seepage from an underground aquifer or may result from the melting of near-surface ground ice at high obliquity. To test these different hypotheses, a cold room-based laboratory simulation has been performed. The experimental slope was designed to simulate debris flows on sand dune slopes at a range of angles, different granulometry and permafrost characteristics. Preliminary results suggest that the typical morphology of gullies observed on Mars can best be reproduced by the formation of linear debris flows related to the melting of a near-surface ground ice with silty materials. This physical modelling highlights the role of the periglacial conditions, especially the active-layer thickness during debris-flow formation. Article in Journal/Newspaper Active layer thickness Ice permafrost Institut national des sciences de l'Univers: HAL-INSU Geophysical Research Letters 35 21 |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
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[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Védie, Emeric Costard, F. Font, Marianne Lagarde, Jean-Louis Laboratory simulations of Martian gullies on sand dunes |
topic_facet |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience Small gullies, observed on Mars, could be formed by groundwater seepage from an underground aquifer or may result from the melting of near-surface ground ice at high obliquity. To test these different hypotheses, a cold room-based laboratory simulation has been performed. The experimental slope was designed to simulate debris flows on sand dune slopes at a range of angles, different granulometry and permafrost characteristics. Preliminary results suggest that the typical morphology of gullies observed on Mars can best be reproduced by the formation of linear debris flows related to the melting of a near-surface ground ice with silty materials. This physical modelling highlights the role of the periglacial conditions, especially the active-layer thickness during debris-flow formation. |
author2 |
Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Védie, Emeric Costard, F. Font, Marianne Lagarde, Jean-Louis |
author_facet |
Védie, Emeric Costard, F. Font, Marianne Lagarde, Jean-Louis |
author_sort |
Védie, Emeric |
title |
Laboratory simulations of Martian gullies on sand dunes |
title_short |
Laboratory simulations of Martian gullies on sand dunes |
title_full |
Laboratory simulations of Martian gullies on sand dunes |
title_fullStr |
Laboratory simulations of Martian gullies on sand dunes |
title_full_unstemmed |
Laboratory simulations of Martian gullies on sand dunes |
title_sort |
laboratory simulations of martian gullies on sand dunes |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://normandie-univ.hal.science/hal-01735572 https://normandie-univ.hal.science/hal-01735572/document https://normandie-univ.hal.science/hal-01735572/file/2008GL035638.pdf https://doi.org/10.1029/2008GL035638 |
genre |
Active layer thickness Ice permafrost |
genre_facet |
Active layer thickness Ice permafrost |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://normandie-univ.hal.science/hal-01735572 Geophysical Research Letters, 2008, 35 (21), pp.L21501. ⟨10.1029/2008GL035638⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035638 hal-01735572 https://normandie-univ.hal.science/hal-01735572 https://normandie-univ.hal.science/hal-01735572/document https://normandie-univ.hal.science/hal-01735572/file/2008GL035638.pdf doi:10.1029/2008GL035638 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008GL035638 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
21 |
_version_ |
1796316450553593856 |