Kīlauea Gravity Survey - April 2022
Over several weeks in April, USGS Hawaiian Volcano Observatory scientists, along with visiting scientist from other volcano observatories, conducted the annual Kīlauea microgravity survey. Gravimeters measure gravitation attraction and they help scientists detect subtle changes in gravity caused by magma movements (learn more in this "Volcano Watch" article: https://www.usgs.gov/news/volcano-watch-research-great-gravity-kilauea-…). USGS scientists also installed new continuous, telemetered gravimeters, on the floor of Kīlauea caldera will allow HVO to monitor changes in gravity real-time. USGS photo by A. Ellis.