Mathematics – Logic
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusm.p33b..02p&link_type=abstract
American Geophysical Union, Spring Meeting 2004, abstract #P33B-02
Mathematics
Logic
5415 Erosion And Weathering, 5464 Remote Sensing, 5494 Instruments And Techniques, 6225 Mars, 8094 Instruments And Techniques
Scientific paper
An interesting problem for planetary scientists interpreting depositional and erosional histories of features evident in many satellite photos of Mars, such as scarps, terraces, plateaus and layering, is the correlation of linear and planar features between images to construct a regional or basin-wide three-dimensional visual model. As high resolution (~10m/pixel) topographic digital elevation models becomes available, the measurement of linear and planar slopes may be accomplished with ordinary GIS software. The software used to make measurements of the strike/dip of selected features was the GIS package ArcView 3.1 with the 3D Geology extension provided by the Geological Survey of Canada. Additional work used GoCAD to construct three-dimensional visual models of the measured structures. The Geological Survey of Canada has produced an extension for GoCAD called SPARSE that allows the construction of three-dimensional visual models of the measured planar and linear features. This package would be useful in constructing models of basins from satellite imagery and topography data. The Melas Chasma region of the Valles Marineris on Mars is used as an example since it is one of the few regions for which 10-meter digital elevation models are publicly available. Plateaus in Melas Chasma are examined using techniques described in this poster presentation to reconstruct local stratigraphic relationships. An interpretation of features observable in images of Melas Chasma is offered.
de Kemp E.
Persaud R.
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