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ISPRS 2004 Combining Mars Data in GRASS GIS for Geologic Mapping
Geo Information Systems (GIS) are standard tools in the Earth sciences whenever different geographic data sets must be combined. GIS became increasingly popular in the field of planetary research as well, due to the increasing amount of data from recent planetary missions, in particular to Mars. However, as the available GIS packages are designed for the standard terrestrial coordinate systems, several obstacles have to be overcome to implement a geodetic accurate and consistent database for other solar system bodies. In the past decade, parameters describing the rotation and shape of Mars have changed several times. Therefore, today, the digital data products available to the science community incorporate several different reference surfaces and map projections. In this paper we describe the required steps to integrate Digital terrain Models (DTMs) and images of Mars Global Surveyor, Viking mosaics, and supplementary geologic information in a single database under the open source GIS GRASS (Geographic Resources Analysis Support System) environment. The different possible reference frames are discussed. The derived GIS database is currently being used to map the global distribution of tectonic faults on Mars. Finally, there are excellent prospects to use GRASS GIS for the analysis and geologic interpretation of image data from the High Resolution Stereo Camera aboard Mars Express. As the software and its source code are released under a free license, scientists may take the opportunity to gather work experience with a planetary GIS at no costs and with the opportunity to modify the software to their specific needs.
- C. Deuchler, M. Wählisch, S. Gehrke, E. Hauber, J. Oberst, R. Jaumann
- Added to Astropedia
- 14 May 2012
- 9 July 2013
- Geospatial Data Presentation Form