Spectral Analysis of Surface Waves testing
![View looks along the ground at wires attached to an apparatus and a large pipeline running up a hill in the background.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/CHS-SASW-PS11.jpg?itok=vJOzwZiJ)
Detailed Description
The preferred method of SASW testing uses a continuous harmonic-wave source produced by a low-frequency computer-controlled electromechanical shaker (device at right) and multi-sensor linear seismometer arrays (2-sensors on the left). This site is 600-PS11, at Trans Alaska Pipeline, Alyeska Pump Station 11, Glennallen, Alaska.
Sources/Usage
Public Domain.