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March 25, 2024 — Annual Kīlauea gravity survey

Detailed Description

A gravimeter being deployed on the floor of Kīlauea caldera, with a GPS station located on a tripod nearby. The gravimeter is the small, shoebox-sized instrument, which can measure a change in the force of gravity to one-in-one billionth of the force you feel every day. USGS photo by A. Ellis.


Public Domain.