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Topographic analysis of features related to ice on Mars
Author(s) -
Mangold N.,
Allemand P.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl008491
Subject(s) - mars exploration program , geology , landslide , debris , geomorphology , debris flow , astrobiology , physics , oceanography
This study analyses the new topographic data from Mars Global Surveyor (MGS) through the lobate debris aprons of Mars. These features are usually interpreted as due to the creep of ground ice. The comparison between measured topographic profiles and profiles calculated from rheological laws demonstrates that these features are due to the solid state deformation of ice. The high volume of such debris aprons can not be explained by rock fall but only by landslides. The ice involved in the flow may then come from the subsurface confirming the presence of large amount of ground ice.