September 7, 2022 — USGS Installs GPS Stations on Ta‘ū Island in American Samoa

Photograph of a Global Positioning System (GPS) station on Ta‘ū Island in American Samoa. Solar panels and batteries in a weather-proof enclosure power the station, which consists of a GPS unit placed on a tripod that is leveled and centered over a benchmark. The GPS unit will measure changes in the ground motion, a monitoring dataset that will complement recently-installed seismometers that are recording earthquake activity in American Samoa. USGS image by A. Ellis.