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TAG: U.S. Geological Survey

An HVO geophysicist deploys a GPS receiver on the Kilauea caldera floor to measure changes in ground motion. A volcanic gas plume rises in the background. (Photo: USGS)

GPS key to monitoring Kilauea eruption, lava lake

December 29, 2020

Photo: David Little

Locating lava flows before an eruption

December 1, 2017