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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Ripple migration and dune activity on Mars: Evidence for dynamic wind processes
Geophysical Research Letters, Volume 37, No. 20, Article L20203, Year 2010
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Description
In this report we show evidence of widespread ripple migration over the stoss side of dark barchan dunes in Nili Patera on Mars. The measured average migration of ∼1.7 meters in less than 4 terrestrial months clearly indicates that active sand saltation is occurring in the study area. In addition, we document widespread changes in the dune base-ground surface contact and in the slip face structures, showing that not only the ripples, but the whole dunes are actually migrating in the present-day atmospheric setting. These results provide unequivocal evidence of recent aeolian activity and suggest that other dunes and ripples on Mars may also be active. © 2010 by the American Geophysical Union.
Authors & Co-Authors
Silvestro, S.
Italy, Chieti
University of G. D'annunzio Chieti and Pescara
Fenton, L. K.
United States, Moffett Field
Nasa Ames Research Center
Vaz, D. A.
Portugal, Coimbra
Universidade de Coimbra
Bridges, N. T.
United States, Laurel
Johns Hopkins University Applied Physics Laboratory
Ori, Gian Gabriele
Italy, Chieti
University of G. D'annunzio Chieti and Pescara
Morocco, Marakech
Université Cadi Ayyad
Statistics
Citations: 5
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1029/2010GL044743
ISSN:
00948276