Coordinated Analysis of Mars Express OMEGA Hyperspectral Imaging and Mars Exploration Rover Traverse Data for Meridiani Planum

HR: 16:30h
AN: P14A-03 [Abstracts]
TI: Coordinated Analysis of Mars Express OMEGA Hyperspectral Imaging and Mars Exploration Rover Traverse Data for Meridiani Planum
AU: * Wiseman, S M
EM: sandraw@levee.wustl.edu
AF: Dept. Earth and Planetary Sciences Washington University, One Brookings Dr Campus Box 1169, Saint Louis, MO 63130 United States
AU: Arvidson, R E
EM: arvidson@wunder.wustl.edu
AF: Dept. Earth and Planetary Sciences Washington University, One Brookings Dr Campus Box 1169, Saint Louis, MO 63130 United States
AU: Poulet, F
EM: francois.poulet@ias.u-psud.fr
AF: Institut d'Astrophysique Spatiale, Universit‚ Paris-Sud, Orsay Cedex, 91405 France
AU: Morris, R V
EM: richard.v.morris1@jsc.nasa.gov
AF: NASA Johnson Space Center, 2101 NASA Rd 1, Houston, TX 77058 United States
AU: Bibring, J
EM: bibring@ias.fr
AF: Institut d'Astrophysique Spatiale, Universit‚ Paris-Sud, Orsay Cedex, 91405 France
AU: Bell, J F
EM: jfb8@cornell.edu
AF: Dept. of Astronomy Cornell University, Space Sciences Bldg., Ithaca, NY 14853 United States
AU: Squyres, S W
EM: squyres@astro.cornell.edu
AF: Dept. of Astronomy Cornell University, Space Sciences Bldg., Ithaca, NY 14853 United States
AU: Christensen, P R
EM: phil.christensen@asu.edu
AF: Dept. of Geological Sciences, Arizona State University, Tempe, AZ 85287 United States
AU: Bellucci, G
EM: bellucci@pptt3.ifsi.rm.cnr.it
AF: Istituto Nazionale Di Astrofiscia dello Spazio, Interplanetario, Rome, 00133 Italy
AU: Gondet, B
EM: brigitte.gondet@ias.u-psud.fr
AF: Institut d'Astrophysique Spatiale, Universit‚ Paris-Sud, Orsay Cedex, 91405 France
AU: Seelos, K S
EM: kim@wunder.wustl.edu
AF: Dept. Earth and Planetary Sciences Washington University, One Brookings Dr Campus Box 1169, Saint Louis, MO 63130 United States
AU: Ehlmann, B L
EM: bethanyehlmann@gmail.com
AF: Keble College, Oxford University, Oxford, OX1 3PG United Kingdom
AU: Farrand, W H
EM: farrand@spacescience.org
AF: Space Science Institute, 4750 Walnut St, Boulder, CO 80301 United States
AU: Fergason, R
EM: paarlber@elvis.mars.asu.edu
AF: Dept. of Geological Sciences, Arizona State University, Tempe, AZ 85287 United States
AU: Griffes, J L
EM: jgriffes@wustl.edu
AF: Dept. Earth and Planetary Sciences Washington University, One Brookings Dr Campus Box 1169, Saint Louis, MO 63130 United States
AU: Grotzinger, J
EM: grotz@mit.edu
AF: Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 United States
AU: Guinness, E A
EM: guinness@wunder.wustl.edu
AF: Dept. Earth and Planetary Sciences Washington University, One Brookings Dr Campus Box 1169, Saint Louis, MO 63130 United States
AU: Herkenhoff, K
EM: kherkenhoff@usgs.gov
AF: U.S. Geological Survey Astrogeology Team, 2255 N. Gemini Dr, Flagstaff, AZ 86001 United States
AU: Jerolmack, D J
P14A-03 AF: Earth, Atmos. & Planetary Sci, Massachusetts Inst. of Technology, Cambridge, MA 02139 United States
AU: Johnson, J R
EM: jrjohnson@usgs.gov
AF: U.S. Geological Survey Astrogeology Team, 2255 N. Gemini Dr, Flagstaff, AZ 86001 United States
AU: Klingelh”fer, G
EM: klingel@mail.uni-mainz.de
AF: Institut fr Anorganische und Analytische Chemie, Johannes Gutenberg-Universit„t, Mainz, D-55128 Germany
AU: Seelos, F P
P14A-03 AF: Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723 United States
AU: Sullivan, R J
P14A-03 AF: Dept. of Astronomy Cornell University, Space Sciences Bldg., Ithaca, NY 14853 United States
AU: Wolff, M J
EM: wolff@SpaceScience.org
AF: Space Science Institute, 4750 Walnut St, Boulder, CO 80301 United States
AB: The ~ 5 km of traverses and associated observations completed by the Opportunity rover from Eagle crater to the Purgatory ripple region show that the plains are covered by aeolian deposits composed of basaltic sands and gray hematite spherules. Spectral reflectance values for Mars Express OMEGA data covering the rover traverse regions are dominated by pyroxene, plagioclase feldspar, gray hematite, and dust, consistent with Pancam, Mini-TES, and M”ssbauer Spectrometer observations. OMEGA data for the bright region to the south of Purgatory dune indicate that there is less gray hematite and more dust as compared to regions to the north. Low albedo, wind-swept plains located several hundred kilometers to the south have more gray hematite and olivine as compared to the landing site. Pyroxene dominates signatures from the cratered highlands to the south of the Opportunity landing site and also ejecta deposits from a ~ 20 km diameter crater that impacted through the plains materials. The plains surface cover consists of lag deposits (hematite granules) left behind as relatively friable sulfate-rich rocks (observed by the rover on crater walls) were preferentially eroded by wind, combined with basaltic sand advected onto the plains by wind.
DE: 5410 Composition (1060, 3672)
DE: 5464 Remote sensing
DE: 5470 Surface materials and properties
DE: 5494 Instruments and techniques
SC: Planetary Sciences [P]
MN: Fall Meeting 2005