Ground Failure
The preferred method of SASW testing is the continuous harmonic wave source approach using an electromechanical shaker (black box by operator) and 4-sensor linear seismometer array (Site 589TOK, Tok Alaska).

http://walrus.wr.usgs.gov/geotech/denaliobs/fig5.html
maintained by Diane Minasian
For further information PLEASE CONTACT: Robert Kayen
last modified 20 January 2005