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Mass wasting on Phobos triggered by an evolving tidal environment

Shi, X. and Oberst, J. and Willner, Konrad (2016) Mass wasting on Phobos triggered by an evolving tidal environment. Geophysical Research Letters, 43 (24), 12,371-12,379. Wiley. DOI: 10.1002/2016gl071650 ISSN 0094-8276

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Official URL: http://dx.doi.org/10.1002/2016gl071650


The Martian moon Phobos is experiencing orbital decay, increasing tidal forces, and possible disruption in the near future. We suggest that this changing dynamic tidal environment has contributed to re-surfacing of the odd-shaped small moon. We investigated mass wasting features in craters using high-resolution images acquired by the Mars Express onboard High Resolution Stereo Camera. We model the evolving dynamical environment of Phobos by reconstructing dynamic slopes on its surface with Phobos at different distances to Mars. We note that the increase in slope by tidal effect correlates with most of the observed landslides, which is particularly obvious for craters near the sub-Mars and anti-Mars points. We suggest that the effect has triggered mass displacements that are responsible for observed asymmetries of some craters. The most recent landslides are likely to be geologically young and occurred within the past few hundred million years.

Item URL in elib:https://elib.dlr.de/109434/
Document Type:Article
Title:Mass wasting on Phobos triggered by an evolving tidal environment
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shi, X.max-planck-institut für sonnensystemforschung, justus-von- liebig-weg, 3 37077 göttingen, germanyUNSPECIFIED
Oberst, J.juergen.oberst (at) dlr.deUNSPECIFIED
Willner, Konradkonrad.willner (at) dlr.dehttps://orcid.org/0000-0002-5437-8477
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1002/2016gl071650
Page Range:12,371-12,379
Keywords:Phobos dynamical environment, mass wasting, HRSC, Mars Express
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Deposited By: Willner, Dr Konrad
Deposited On:15 Dec 2016 09:03
Last Modified:01 Dec 2018 19:52

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