Mars Exploration Rover candidate landing sites as viewed by THEMIS

Philip Christensen, Steven Ruff, R. Fergason, N. Gorelick, B. M. Jakosky, M. D. Lane, A. S. McEwen, H. Y. McSween, G. L. Mehall, K. Milam, J. E. Moersch, S. M. Pelkey, A. D. Rogers, M. B. Wyatt

Research output: Contribution to journalArticle

23 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)12-43
Number of pages32
JournalIcarus
Volume176
Issue number1
DOIs
StatePublished - Jul 2005

Fingerprint

Mars exploration
landing sites
imaging spectrometers
thermal emission
Mars
spectrometer
inertia
2001 Mars Odyssey
margins
highlands
canyons
stratigraphy
mass movement
bedform
daytime
hematite
alluvial fan
rims
fans
basin

Keywords

  • Infrared observations
  • Mars, surface

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Christensen, P., Ruff, S., Fergason, R., Gorelick, N., Jakosky, B. M., Lane, M. D., ... Wyatt, M. B. (2005). Mars Exploration Rover candidate landing sites as viewed by THEMIS. Icarus, 176(1), 12-43. https://doi.org/10.1016/j.icarus.2005.01.004

Mars Exploration Rover candidate landing sites as viewed by THEMIS. / Christensen, Philip; Ruff, Steven; Fergason, R.; Gorelick, N.; Jakosky, B. M.; Lane, M. D.; McEwen, A. S.; McSween, H. Y.; Mehall, G. L.; Milam, K.; Moersch, J. E.; Pelkey, S. M.; Rogers, A. D.; Wyatt, M. B.

In: Icarus, Vol. 176, No. 1, 07.2005, p. 12-43.

Research output: Contribution to journalArticle

Christensen, P, Ruff, S, Fergason, R, Gorelick, N, Jakosky, BM, Lane, MD, McEwen, AS, McSween, HY, Mehall, GL, Milam, K, Moersch, JE, Pelkey, SM, Rogers, AD & Wyatt, MB 2005, 'Mars Exploration Rover candidate landing sites as viewed by THEMIS', Icarus, vol. 176, no. 1, pp. 12-43. https://doi.org/10.1016/j.icarus.2005.01.004
Christensen, Philip ; Ruff, Steven ; Fergason, R. ; Gorelick, N. ; Jakosky, B. M. ; Lane, M. D. ; McEwen, A. S. ; McSween, H. Y. ; Mehall, G. L. ; Milam, K. ; Moersch, J. E. ; Pelkey, S. M. ; Rogers, A. D. ; Wyatt, M. B. / Mars Exploration Rover candidate landing sites as viewed by THEMIS. In: Icarus. 2005 ; Vol. 176, No. 1. pp. 12-43.
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