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PDS Geosciences Node, Washington University in St. Louis
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2001 Mars Odyssey: GRS Element Concentrations

The Odyssey GRS Element Concentrations data set contains element concentration maps and underlying data for various elements, including chlorine, iron, water, potassium, silicon, and thorium. These data products were originally released by the GRS Science Team to the public in March 2006. They contain data that was collected by the 2001 Mars Odyssey Gamma-Ray Spectrometer between June 4, 2002, and April 3, 2005. These data are highly processed, and represent the fully corrected CO2 frost free elemental concentrations.

See Boynton et al.,  Concentration of H, Si, Cl, K, Fe, and Th in the low- and mid-latitude regions of Mars, J. Geophys. Res. - Planets, 112, E12S99, 2007, doi:10.1029/2007JE002887.

Data files (*.tab) are tables with fixed-length fields. Each data file is accompanied by a PDS label (*.lbl) that describes the format of the data file. Both the data and the labels are ASCII text files.

AAREADME.TXT Introduction to the archive
BROWSE directory JPEG images of concentration maps and error maps. Open the file browse.htm to view the maps in a web browser.
CATALOG directory Information about the archive in the PDS Catalog
DATA/UNSMOOTHED directory Data products from which the maps were derived, in 2 x 2, 5 x 5, and 10 x 10 degree latitude-longitude bins
DATA/SMOOTHED directory Data products from which the maps were derived, in 5 x 5 degree latitude-longitude bins, smoothed using a boxcar filter
INDEX directory Index of all products in the archive
Root directory Top-level directory of the virtual volume

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