Skip to Main content Skip to Navigation
Journal articles

Mobility and topographic effects for large Valles Marineris landslides on Mars

Abstract : [1] Recent experiments on dry granular flows over horizontal plane bare some similarities with large Martian landslides observed in Valles Marineris (VM). However, Martian normalized runout are twice as large as those that observed in dry granular flow experiments. Numerical simulations on theoretical 2D and real 3D topographies reconstructed from remote sensing data show that slope effects significantly reduce the shift between experimental results and Martian observation. However, topography effects are not strong enough to explain the high mobility of Martian landslides. As a result, other physical and/or geological processes should play a key role into the dynamics of Martian landslides. A new mobility is defined that makes it possible to characterize the dynamics of the flow regardless of the geometry of the released mass and of the underlying topography.
Document type :
Journal articles
Complete list of metadatas

Cited literature [21 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01285794
Contributor : Eva Fareau <>
Submitted on : Thursday, March 10, 2016 - 11:10:20 AM
Last modification on : Friday, April 10, 2020 - 5:13:40 PM
Long-term archiving on: : Monday, June 13, 2016 - 8:59:48 AM

File

grl9835.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Antoine Lucas, Anne Mangeney. Mobility and topographic effects for large Valles Marineris landslides on Mars. Geophysical Research Letters, American Geophysical Union, 2007, 34 (10), ⟨10.1029/2007GL029835⟩. ⟨insu-01285794⟩

Share

Metrics

Record views

543

Files downloads

1163