December 23, 2022 — Mauna Loa post-eruption GPS survey

Hawaiian Volcano Observatory geophysicist Ingrid Johanson checks on a survey-mode GPS instrument deployed near the summit of Mauna Loa. This survey will supplement HVO's network of continuous GPS instruments and provide higher spatial density of measurements for how Mauna Loa deformed during the recent eruption. The positions obtained during the current survey will be compared back to positions obtained during HVO's annual survey last May. USGS image.