In the past, geophysicists typically compiled a 3D cutaway view of the earth's crust based on an artist's interpretation of maps, cross-sections, and seismic profiles. Using an interactive 3D data analysis and visualization program they developed, JPL researchers will use the CASA metacomputer to construct the same view, but based on real data and processed into a scene fast enough to permit interactive manipulation of the resultant image. Interaction is needed because only after seeing an image can the geologists determine what other views or level of detail to examine. Colors reflect surface mineralogy and vegetation.
Ferric iron is blue, ferrous iron is green, and clays, carbonates, and vegetation are red.
The area shown is about 50,000 square kilometers. Images like this, generated using an approach developed at the Jet Propulsion Laboratory for combining multiple data sets, enable geophysicists to detect more easily features such as faults and extinct volcanoes. JPL researchers will use the CASA gigabit network for interactive exploration of such data. Among the benefits of this CASA application will be much clearer identification of fault zones, plate thrusts, and surface erosion effects, as well an improved ability understanding of earthquakes. Input data for this project include seismic, Landsat, and topographic information.