Mathematics – Logic
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p41a0895h&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P41A-0895
Mathematics
Logic
5420 Impact Phenomena (Includes Cratering), 5464 Remote Sensing, 5470 Surface Materials And Properties, 5494 Instruments And Techniques, 6225 Mars
Scientific paper
High-resolution LIDAR (LIght Detection and Ranging) data were recently acquired for several explosion craters at the Nevada Test Site (NTS) for the purpose of generating high-resolution (1- to 2-m horizontal posting; 50-cm vertical accuracy) digital elevation models (DEMs). The LIDAR DEMs and ancillary datasets, including ASTER visible-IR images and SIR-C radar images, are to be used in the study of cratering processes. Among the questions we seek to answer are whether these explosion craters can be used as analogs for impact craters on Mars. To this end, we present an error analysis of the LIDAR DEMs and an assessment of their utility in hazard avoidance applications for landers and rovers. We show preliminary data integration results in which we geologically characterize the multisensor signatures of the craters and their ejecta. These results are interpreted in terms of hazard zones defined by different types of ejecta, rock populations, and topographic characteristics (e.g. slope, aspect, relief). From these, we aim to produce a quantitative hazards map for craters in the NTS that can serve as a model for the type of information LIDAR and imagery can provide to a hazard avoidance system. All data and derived products are being manipulated and cataloged in a geographic information system (GIS), which will facilitate the packaging and distribution of materials via the Planetary Data System or other community data repository. Work performed under contract to NASA.
Chee Y.
Farr Tom G.
Hurtado José M. Jr.
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