Implication of Hydrous Weathering Product on Mars for Future Exploration

Details Implication of Hydrous Weathering Product on Mars for Future Exploration Implication of Hydrous Weathering Product on Mars for Future Exploration

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mmws.work...24k&link_type=abstract

Workshop on the Issue Martian Meteorites: Where do we Stand and Where are we Going?, p. 24

Mathematics

Logic

Infrared Spectrometers, Mars Exploration, Mars Surface, Radiometers, Structural Properties (Geology), Water, Water Vapor, Weathering, Hydroxides, Iron Oxides, Mariner 7 Space Probe, Viking Mars Program, Pyroxenes

Scientific paper

Analysis of the newly recovered and recalibrated 1969 Mariner 7 Infrared Spectrometer (IRS) spectra (1.8- 14.4 micrometer) provide evidence for the presence of a hydrous weathering product on the martian surface, interpreted to be goethite. A hydrous weathering product such as goethite may mark areas with a higher abundance of water vapor or areas where water was more abundant in the past. Such areas may contain interesting geologic structures, and an increased abundance of water vapor would have implications in the search for areas most conducive to life. These areas may thus warrant more in-depth examination, and may also make prime targets for future landers. One point the goethite interpretation illustrates that has relevance for future spectral instruments is the importance of obtaining a full spectrum to search for unexpected constituents. A multi-band radiometer, such as the Viking (Infrared Thermal Mapper) IRTM or the proposed Mars Surveyor 2001 THEMIS, has the advantage of lower data rate requirements, and it does provide information on the surface. However, it cannot be used to uniquely identify unexpected constituents, such as goethite.

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