February 2, 2024 — Deployment of temporary GPS sites in response to Kīlauea unrest

One of the temporary GPS stations deployed in response to the intrusive activity southwest of Kīlauea summit. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface. A high-precision GPS unit is centered over the benchmark to collect data. Its position will be compared to data collected during previous GPS deployments on the benchmark to discern subtle patterns of ground deformation. USGS photo by A. Ellis.