B4 Project in Google Earth


Project B4 is an NSF project led by OSU and USGS scientists, and supported by NCALM and UNAVCO, that completed an Airborne Laser Swath Mapping (ALSM) survey of ~ 1,000 km of the southern San Andreas Fault and San Jacinto Fault systems in mid-2005. The purpose is to obtain pre-earthquake imagery necessary to determine near-field ground deformation after a future large event (hence the name B4), and to support tectonic and paleoseismic research. This particular data set has been gridded at ~1 meter resolution. See this abstract for more details.

The Satellite Geodesy group and the Scripps Institution of Oceanography Visualization Center have created 3D visualizations of the B4 project data that can be viewed in Google Earth or with the Fledermaus package. Click on a segment on the map below to download the files appropriate for either package.

The 'kmz' files can be viewed with Google Earth. You can double click on the downloaded file or use the File -> Open menu in Google Earth.
The 'sd' files can be viewed using the Fledermaus toolkit or the free viewer iView3d.
Click here for help navigating the Fledermaus files.

B4 Data

Please click on a segment to download kmz files or Fledermaus files.

Ftp mirror at Caltech: ftp://pipeline.gps.caltech.edu/pub/users/hudnut/B4/B4_kmz/


These visualizations were produced by Anand Patel, Karen Luttrell, David Sandwell, Atul Nayak and Debi Kilb as part of the National Science Foundation (NSF) award, EAR 0545250 to the University of California, San Diego, Scripps Institution of Oceanography for "Community Access to Visualizations of EarthScope Focus Sites: Collaborative Construction of Virtual 3D Models."

Our thanks to members of the B4 Project Team - Ken Hudnut (hudnut@usgs.gov) and Michael Bevis (mbevis@osu.edu) for their data and suggestions, to Kurt Feigl for the grd2geotiff tool, to David Raleigh for the segment map seen above and Dana Caccamise for logos and poster information..