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Radar Soundings of the Subsurface of Mars
Author(s) -
G. Picardi,
J. J. Plaut,
D. Biccari,
O. Bombaci,
D. Calabrese,
M. Cartacci,
A. Cicchetti,
Stephen M. Clifford,
P. Edenhofer,
W. M. Farrell,
Costanzo Federico,
A. Frigeri,
D. A. Gurnett,
T. Hagfors,
Essam Heggy,
Alain Hérique,
Richard Huff,
A. B. Ivanov,
W.T.K. Johnson,
R. Jordan,
D. L. Kirchner,
W. Kofman,
C. Leuschen,
Erling Nielsen,
R. Orosei,
Elena Pettinelli,
R. J. Phillips,
Dirk Plettemeier,
A. Safaeinili,
R. Seu,
E. R. Stofan,
G. Vannaroni,
T. R. Watters,
E. Zampolini
Publication year - 2005
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.1122165
Subject(s) - geology , mars exploration program , martian , orbiter , depth sounding , radar , impact crater , mars landing , regolith , astrobiology , remote sensing , exploration of mars , geophysics , geomorphology , oceanography , telecommunications , physics , computer science , engineering , aerospace engineering
The martian subsurface has been probed to kilometer depths by the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument aboard the Mars Express orbiter. Signals penetrate the polar layered deposits, probably imaging the base of the deposits. Data from the northern lowlands of Chryse Planitia have revealed a shallowly buried quasi-circular structure about 250 kilometers in diameter that is interpreted to be an impact basin. In addition, a planar reflector associated with the basin structure may indicate the presence of a low-loss deposit that is more than 1 kilometer thick.

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