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MESSENGER: GRS Derived Analysis Products

The MESSENGER GRS Derived Analysis Products (DAPs) are maps of gamma-ray count rates or
elemental abundances derived from summed GRS data, each with a corresponding one standard deviation error map.

See Peplowski, P.N., et al., Variations in the abundances of potassium and thorium on the surface of Mercury: Results from the MESSENGER Gamma-Ray Spectrometer, Journal of Geophysical Research, 117, E00L04, doi:10.1029/2012JE004141, 2012.

The GRS DAPs are stored along with the GRS Calibrated Data Records (CDRs) and Reduced Data Records (RDRs) on PDS volume MESSGRS_2001. Please see below for direct access to the volume.  Only directories pertaining to the DAPs are listed below.  Alternatively, to search the archive for data that meet particular criteria, e.g. time and location, use the Mercury Orbital Data Explorer (ODE).

AAREADME.TXT Introduction to the archive
ERRATA.TXT Notes and errata
CATALOG directory Information about the archive in the PDS Catalog
DATA/MAPS directory The GRS DAPs
DOCUMENT directory Documentation needed to understand the GRS CDR/RDR/DAP data products
INDEX directory Index of all products in the archive
Root directory Top-level directory of the volume

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Curator: Susan Slavney
NASA Official: Raymond E. Arvidson
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