Spectral Properties of Hydrated Sulfate Minerals on Mars

Details Spectral Properties of Hydrated Sulfate Minerals on Mars Spectral Properties of Hydrated Sulfate Minerals on Mars

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..650d&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.650

Computer Science

Scientific paper

The identification of hydrated sulfate minerals on Mars has a number of implications for surface geochemistry and climate evolution, largely due to their involvement in the production of evaporite minerals from ancient lake basins [1,2]. While in-situ identification from surface landers and rovers has advantages in signal fidelity and ground truthing, regional context for now must rely on remote sensing from orbital instruments. Mars Express OMEGA and Mars Reconnaissance Orbiter CRISM observations have identified a number of sulfate mineral deposits based on comparisons with laboratory spectra of these compounds. At the surface temperatures (150 - 300K) of Mars, visible to near-infrared (VNIR) spectra of hydrated sulfate minerals exhibit sensitivity to temperature that manifests in shifts of band positions, shapes, and widths [3]. Retrieval of surface mineral abundances from such regional observations may be enhanced by inclusion of temperature-appropriate laboratory reflectance spectra.

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