Link to USGS home page Link to USGS home pageWestern Region Coastal and Marine Geology
Ground Failure

Geotechnical Observations of the November 3, 2002 M7.9 Denali Fault Earthquake

Figure 6.

back Back to Report

Lateral spreads on bars of the Tanana River. The crust of the bar was frozen to a depth of approximately 0.3 meters at the time of the earthquake and shattered in a polygonal pattern that was observed along several hundred miles of the river deposits (Site 588TET. Tanana River, Tetlin Bridge).

Photo of lateral spreads on Tanana River.
maintained by Diane Minasian
For further information PLEASE CONTACT: Robert Kayen
last modified 20 January 2005