Mars - Near-infrared spectral reflectance of surface regions and compositional implications

Details Mars - Near-infrared spectral reflectance of surface regions and compositional implications Mars - Near-infrared spectral reflectance of surface regions and compositional implications

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.3021m&link_type=abstract

Journal of Geophysical Research, vol. 87, Apr. 10, 1982, p. 3021-3032.

Mathematics

Logic

99

Geochemistry, Mars Surface, Near Infrared Radiation, Spectral Reflectance, Structural Properties (Geology), Chemical Composition, Data Reduction, Mineralogy, Remote Sensing, Water, Mars, Infrared, Spectra, Reflectance, Surface, Composition, Features, Spectrophotometry, Wavelengths, Properties, Water, Ice, Absorption, Frost, Regions, Weathering, Magnesium, Regolith, Observations, Maps, Data Reduction, Analysis, Characteristics, Parameters

Scientific paper

Both morphological and compositional information are needed to define and characterize surface geologic units on Mars. A description is presented of new, near-infrared spectra (0.65 to 2.50 micrometers) for 11 regions on the Martian surface observed in 1978. The high photometric quality of these data combined with increased near-infrared spectral coverage provide new information about the spectral behavior and, therefore, the composition and physical nature of Martian surface materials. The spectral reflectances were obtained with the aid of a 2.2-m telescope located on Mauna Kea, Hawaii. A cooled (to 77 K) circular variable filter spectrometer with an InSb detector was used to measure alternatively Mars and the standard star Beta Geminorum. Attention is given to general spectral characteristics, the dark region composition, spectral evidence for water, and the 2.3 micrometer absorption.

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