PROPOSED MARS LANDING SITES FOR MER A & B West Hemisphere Centered at: 30°N, 30°W East Hemisphere Centered at: 30°N, 210°W 10°N 15°S 0° O OO O O 10°N 15°S.

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Presentation transcript:

PROPOSED MARS LANDING SITES FOR MER A & B West Hemisphere Centered at: 30°N, 30°W East Hemisphere Centered at: 30°N, 210°W 10°N 15°S 0° O OO O O 10°N 15°S 0° O

EOS CHASMA Who: R. Kuzmin, R. Greeley, D. Nelson, J. Farmer, C. Klein What: Potential sites for the MER-A lander When: For the 2003 launch opportunity Where: East end of Valles Marineris Why: It has a high potential to meet the science objectives How: SAFELY! Who: R. Kuzmin, R. Greeley, D. Nelson, J. Farmer, C. Klein What: Potential sites for the MER-A lander When: For the 2003 launch opportunity Where: East end of Valles Marineris Why: It has a high potential to meet the science objectives How: SAFELY!

EOS CHASMA MER-A Site

GENERAL GEOLOGY, EOS SITE (Scott & Tanaka,1986)

EOS CHASMA Major Hesperian-age channel system Chaotic terrain source (sub-surface water + local ponding?) Associated with Valles Marineris (tectonic, hydrothermal activity?) It is an excellent candidate site for “ancient groundwater” environments Major Hesperian-age channel system Chaotic terrain source (sub-surface water + local ponding?) Associated with Valles Marineris (tectonic, hydrothermal activity?) It is an excellent candidate site for “ancient groundwater” environments Scientific Characteristics

LOCAL GEOLOGY (Witbeck et al., 1991)

EOS CHASMA Location: 13.5°S, 41.5°W; -3.5 km elevation, 56 km 66° azimuth TES thermal inertia (3 km footprint) = medium to coarse sand Albedo = 0.13 to 0.20 suggests little dust Viking IRTM suggests 10 to 20 % “rocks” Radar (low resolution; Harmon et al., 1992) 0.05 to 12.6 cm wavelength 0.05 to 3.5 cm wavelength Location: 13.5°S, 41.5°W; -3.5 km elevation, 56 km 66° azimuth TES thermal inertia (3 km footprint) = medium to coarse sand Albedo = 0.13 to 0.20 suggests little dust Viking IRTM suggests 10 to 20 % “rocks” Radar (low resolution; Harmon et al., 1992) 0.05 to 12.6 cm wavelength 0.05 to 3.5 cm wavelength Site Characteristics

EOS CHASMA Characterize rocks and minerals derived from groundwater, fluvial, and lacustrine environments ◊primary rocks and minerals (composition and texture) ◊alteration products (test hydrothermal hypothesis, etc.) Determine surface geology (fluvial, aeolian, mass-wasting, etc. processes) Study near-surface stratigraphy exposed locally (e.g., in small crater walls) Assess stratigraphy of channel walls (~100 pixels high) Characterize rocks and minerals derived from groundwater, fluvial, and lacustrine environments ◊primary rocks and minerals (composition and texture) ◊alteration products (test hydrothermal hypothesis, etc.) Determine surface geology (fluvial, aeolian, mass-wasting, etc. processes) Study near-surface stratigraphy exposed locally (e.g., in small crater walls) Assess stratigraphy of channel walls (~100 pixels high) MER-A Science Potential