September 7, 2022 — USGS Installs GPS Stations on Ta‘ū Island in American Samoa
![Color photograph of monitoring equipment](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/TAU2_install.jpg?itok=lFfZUdYc)
Detailed Description
A USGS scientist checks the power supply at a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. The station consists of a GPS unit, which can measure changes in ground motion, placed on a tripod that is leveled and centered over a benchmark. The GPS units will complement recently-installed seismometers, which record earthquake activity occurring in American Samoa. USGS image by A. Ellis.
Sources/Usage
Public Domain.