Mauna Loa summit mission-critical fieldwork: MultiGAS installation

On April 27, HVO field engineers and a gas geochemist conducted fieldwork to increase HVO's volcano-monitoring capabilities. Staff installed a MultiGAS station to collect volcanic gas data from within Moku‘āweoweo, Mauna Loa's summit caldera. The work was carried out with permission of Hawai‘i Volcanoes National Park. In this photo, an HVO field engineer guides the helicopter as it lowers part of the station down onto the floor of the caldera. Mauna Loa Volcano is currently at Alert Level/Aviation Color Code ADVISORY/YELLOW, due to increased seismicity and summit inflation above background levels. USGS photo by T. Elias.