Martian gullies and their Earth analogues: introduction
نویسندگان
چکیده
منابع مشابه
Comparison of Martian Gullies and Lunar Crater-wall Landslides
I present lunar landslides that bear a striking resemblance to some martian gullies, despite the lack of water on the Moon both today and in the past. This observation indicates that gully features can be formed via a dry landslide mechanism. Thus on Mars, morphology alone is insufficient to determine the mechanism of formation of these features. Introduction: In 2000, Malin and Edgett (1) repo...
متن کاملMartian Slope Streaks and Gullies: Origins as Dry Granular Flows
Streaks and gullies (Figs 1,2) are common on Martian slopes, and are geologically young; slope streaks have formed during the last few years of Mars Global Surveyor imaging. Both slope streaks [1] and gullies [2] involve flow of granular material, but it is not clear whether liquid water (or another suspending agent) was involved. The possibility that liquid water was involved makes gullies and...
متن کاملAn evolutionary scheme for morphological classification of Martian gullies
Martian gullies are geologically recent small-scale features characterised by an alcove-channel-apron morphology associated on Earth with liquid water. Since their discovery by Malin and Edgett (1), several theories have been advanced to explain their formation. These typically emphasise either groundwater processes (1, 2) or melting of ground ice or snowpack (3). The former approach has been c...
متن کاملNew Insights Into the Dynamics of Martian Gullies
Mangold, D. Mège, F. Bouchut, Institut de Physique du Globe de Paris, Université Paris-Diderot, CNRS, 4 place Jussieu, 75005 Paris, France, Laboratoire de Planétologie et de Géodynamique, Université de Nantes, CNRS, 2 rue de la Houssinière, 44000 Nantes, France, 3 Département de Mathématiques et Applications, École Normale Supérieure, CNRS, 45 rue d’Ulm, 75005 Paris, France Contact: [email protected].
متن کاملThe Role of Gullies in Martian Impact Crater Degradation
We found that craters in the mid-latitudes of Mars possess a marked asymmetry, which is linked with the occurrence of gullies. We also found that a prerequisite for gully formation is the occurrence of steep slopes. The analysis was performed in three areas with elevation data from the High Resolution Stereo Camera (HRSC) on-board Mars Express. Figure 1: MOLA global map with our study sites mar...
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ژورنال
عنوان ژورنال: Geological Society, London, Special Publications
سال: 2018
ISSN: 0305-8719,2041-4927
DOI: 10.1144/sp467.15