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Authors |
Ernst Hauber F. Preusker F. Trauthan Dennis Reiss Ella Carlsson Harald Hiesinger R. Jaumann H.A.B. Johansson Lars Johansson Andreas Johnsson Steve McDaniel Mats Olvmo Michael Zanetti |
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Published in | 40th Lunar and Planetary Science Conference |
Issue | 1648 |
Publication year | 2009 |
Published at |
Department of Earth Sciences |
Language | en |
Links |
www.lpi.usra.edu/meetings/lpsc2009/... |
Keywords | Mars, periglacial, permafrost, Svalbard, alluvial fan |
Subject categories | Planetary system, Earth and Related Environmental Sciences, Physical Geography |
Alluvial fan-like landforms have been identified on Mars. Since alluvial fans are recorders of processes that are sensitive to climatic conditions, the investigation of possible Martian fans can reveal information about the planet`s climate. In lieu of direct observations of active depositional processes on Martian fans, comparisons with terrestrial analogues can constrain models of Martian fan formation derived from remote sensing data. Since present-day Mars is cold and dry, alluvial fans formed in cold deserts should be considered as useful analogues. The probably closest climatic analogue to Mars on Earth are the Antarctic Dry Valleys , but polar deserts can also be found in the Arctic. We report on our field work in summer 2008 and a simultaneous flight campaign with an airborne version (HRSC-AX) of the High Resolution Stereo Camera (HRSC) onboard Mars Express. The results are compared with measurements of Martian fans, based on HRSC DEM.