Earth Sciences and Image Analysis Debriefing with Crewmembers, 24 August, 2001

STS-104 Earth Sciences and Image Analysis Debriefing with Crewmembers
August 24, 2001

MARS ANALOGS

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STS104-721-7 Egypt: Bedrock topography is largely buried under windblown sand in this area; only topographically high spots interrupt the sheetlike transport of sand. Dust storms that last for weeks and cover much of the northern hemisphere of Mars have been imaged by the Mars Orbital Camera.

STS104-719-86 Namibia: Dik Willem volcano and dark sand streak. Streaks of dark sediment, carried from exposed bedrock, emphasize the dominant wind direction. Longitudinal dunes of varying orientation reflect the influence of topographically high features on wind circulation. Mars Orbital Camera photos of the volcanic highlands of Mars reveal similar features.

STS104-705-68 South Africa: Surface streams flowing off the bedrock plateau (smooth surface at left center) have carved canyons and a dendritic network of channels in the layered rock (very rugged country downhill of a marked cliff edge). Similar features, seen in Mars Orbital Camera images of the Northern Highlands of Mars, are interpreted to have been created by flowing water at a time when the Martian climate is thought to have been wetter.

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Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .

NASA Responsible Official: Tracy Calhoun

Curator: jsc-earthweb@mail.nasa.gov

Contributors: Earth Sciences Web Team

National Aeronautics and Space Administration

Lyndon B. Johnson Space Center

International Space Station National Laboratory

Last Update:

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STS104-721-7	Egypt: Bedrock topography is largely buried under windblown sand in this area; only topographically high spots interrupt the sheetlike transport of sand. Dust storms that last for weeks and cover much of the northern hemisphere of Mars have been imaged by the Mars Orbital Camera.
STS104-719-86	Namibia: Dik Willem volcano and dark sand streak. Streaks of dark sediment, carried from exposed bedrock, emphasize the dominant wind direction. Longitudinal dunes of varying orientation reflect the influence of topographically high features on wind circulation. Mars Orbital Camera photos of the volcanic highlands of Mars reveal similar features.
STS104-705-68	South Africa: Surface streams flowing off the bedrock plateau (smooth surface at left center) have carved canyons and a dendritic network of channels in the layered rock (very rugged country downhill of a marked cliff edge). Similar features, seen in Mars Orbital Camera images of the Northern Highlands of Mars, are interpreted to have been created by flowing water at a time when the Martian climate is thought to have been wetter.

This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .
	NASA Responsible Official: Tracy Calhoun Curator: jsc-earthweb@mail.nasa.gov Contributors: Earth Sciences Web Team	National Aeronautics and Space Administration Lyndon B. Johnson Space Center	International Space Station National Laboratory Last Update:
Server: 1