Title of article :
Mars Exploration Rover candidate landing sites as viewed by THEMIS
Author/Authors :
Christensen، نويسنده , , P.R. and Ruff، نويسنده , , S.W. and Fergason، نويسنده , , R. and Gorelick، نويسنده , , N. and Jakosky، نويسنده , , B.M. and Lane، نويسنده , , M.D. and McEwen، نويسنده , , A.S. and McSween، نويسنده , , H.Y. and Mehall، نويسنده , , G.L. and Milam، نويسنده , , K. and Moersch، نويسنده , , J.E. and Pelkey، نويسنده , , S.M. and Rogers، نويسنده , , A.D. and Wyatt، نويسنده , , M.B.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
32
From page :
12
To page :
43
Abstract :
The analysis of six landing sites that were candidates for the two NASA Mars Exploration Rovers (MER) benefited from recently available image data from the Thermal Emission Imaging Spectrometer (THEMIS) onboard the 2001 Mars Odyssey spacecraft. The combination of daytime and nighttime thermal infrared images from THEMIS supplemented by additional data sets has lead to new or expanded insights into the nature of each landing site. In Meridiani Planum, a layer of lighter-toned, higher thermal inertia material is observable just below the hematite-bearing layer. Gusev Crater displays a more complex stratigraphy than previously observed, including an upper layer with lobate margins. The highest inertia unit of southern Isidis Planitia is confined to topographic lows in the rim/basin margin and does not appear to be due to highland material transported onto the basin floor. The enigmatic, ovoid, blocky terrain on the floor of Melas Chasma displays higher thermal inertia than its surroundings, an indication that it contains coarser or more indurated material than the adjacent aeolian bedforms. The myriad channels of Athabasca Valles display distinctive thermal signatures despite the presence of a bright layer of dust covering the region. The presence of alluvial fans produced from spur-and-gulley erosion of the walls of Eos Chasma demonstrates that mass movements have occurred following the canyon scouring floods.
Keywords :
Marssurface , Infrared observations
Journal title :
Icarus
Serial Year :
2005
Journal title :
Icarus
Record number :
2373532
Link To Document :
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