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ASU GEON NODE

ASU GEON NODE. J Ramón Arrowsmith Department of Geological Sciences Arizona State University, Tempe, AZ http://activetectonics.la.asu.edu ramon.arrowsmith@asu.edu. Outline. (Active) Fault databases and fault system visualization Digital topography use scenarios Hydro1K (1 km)

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ASU GEON NODE

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  1. ASU GEON NODE J Ramón Arrowsmith Department of Geological Sciences Arizona State University, Tempe, AZ http://activetectonics.la.asu.edu ramon.arrowsmith@asu.edu

  2. Outline • (Active) Fault databases and fault system visualization • Digital topography use scenarios • Hydro1K (1 km) • Shuttle Topography Mission and National Elevation Dataset (30 m) • Airborne Laser Swath Mapping (1 m) • Ideas for online digital elevation data and (satellite) imagery

  3. Digital (active) fault databases and fault visualization • Typical shapefile fault “databases” • USGS active faults • California Geological Survey • Fault databases in development (incomplete list) • Colorado Geological Survey [Access2000]--http://geosurvey.state.co.us/pubs/ceno/index.htm • Fault Database for Southern California (Donnellan, et al.) [MySQL]--http://infogroup.usc.edu:8080/Fault_Da.doc • SCEC/SCEC-ITR: Fault Activity Database, Fault Information System, Community Fault/Block/Velocity Models

  4. Southern California Earthquake Center LA3D-Java--based structural visualization of Community Fault Model (CFM); GeoWall capable

  5. Digital topography use scenarios

  6. HYDRO1K • Developed from GTOPO30 (30 arc-second—1 km--DEM) • Reprojected, hydrologically corrected • http://edcdaac.usgs.gov/gtopo30/hydro/

  7. Rockies Testbed HYDRO1K plotted with ArcMap

  8. Rockies Testbed GTOPO30, ANSS seismicity plotted with GMT 84549 eqs!

  9. Mid Atlantic Testbed

  10. National Elevation Dataset (NED) & Shuttle Radar Topography Mission (SRTM) • NED—merged, seamless, “best available” 10 or 30 m digital elevation data (mostly 7.5 minute DEM source data) • SRTM—C and X band interferometric synthetic aperture radar for topographic data acquisition over 80% of earth landmass on 11 day shuttle mission (Feb. 2000). Significant processing for 30 m data. Unedited output from processor.

  11. SRTM and NED downloads • http://seamless.usgs.gov • ~1x1 degree tiles for SRTM were ~100Mb; for NED 80 Mb. Total for Rockies = 14.4 Gb • Merge and reduce precision (mm to mm) produces three 1 Gb swaths across the Rockies testbed.

  12. 1/3” NED (10 m data): 83 Gb

  13. NW Montana NED versus SRTM Wasatch Grand Canyon

  14. Airborne Laser Swath Mapping (ALSM) • Allows for the measurement of surface topographic features with decimeter-level accuracies. • AKA Light Detection and Ranging (LIDAR) • Powerful tool for surface process studies because it allows for the characterization of the landscape at the appropriate scale • Data intensive! • National Center for Airborne Laser Mapping (NCALM)—recently funded NSF project for coordinated research grade ALSM data

  15. Ideas for online digital elevation data and (satellite) imagery http://seamless.usgs.gov/ https://zulu.ssc.nasa.gov/mrsid/ DEMs Landsat TM 742 Or ASTER … +

  16. ASTER-SW scenes (as of 04/03/2003) ASTER images for the southern Rockies Each is ~118Mb ; total here is ~81 Gb

  17. “on-the-fly” processing of user selected ASTER image with JAVA front end to IDL

  18. Remote sensing application for geological mapping

  19. Conclusions • Collaboration is appropriate with SCEC for Fault representation and visualization efforts • DEM analysis is data processing intensive • Opportunity to link online elevation and imagery databases • Other data/efforts: • Paleoearthquakes • Late Cenozoic vertical motions (exhumation and basins) • Focal mechanisms (Harvard/USGS have <20)

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