Link to USGS home page

Blast-Induced Liquefaction and Determination of Soil-Density Changes with Ground-Penetrating Radar, Treasure Island, CA

Index Back to home page About these Web Pages Acknowledgments Conclusions Relations and Results Radar Methods Treasure Island Objectives Abstract

Crosshole GPR surveys are able to quantify in spatial detail: 1) the initial density state of sandy fill at Treasure Island, and 2) the changes in density due to a liquefaction event. Volumetric strain associated with these changes in density would result in settlements of 17 cm for the 4-m-thick liquefied layer estimated for the site. The radar-based estimates of settlement are remarkably close to ground-level changes observed at the site. This experiment demonstrates the applicability of crosshole GPR for non-destructive imaging of void ratio within a large volume of soil, and for characterizing changes in soil volume due to a liquefaction event.

 Relations and Results  Poster Home Page  Acknowledgments  Home
For further information PLEASE CONTACT: Robert Kayen
last modified 1 December 2003 (lzt)
USGS Privacy Statement   |   Disclaimer   |   Feedback   |   Accessibility
Department of the Interior   U.S. Geological Survey   Geologic Division   Coastal & Marine Geology Program   Western Region Coastal & Marine Geology