Images

The gear for the Kīlauea Seismic Imaging Project is staged and ready to be moved on Crater Rim Drive in the closed area of Hawai‘i Volcanoes National Park. Portions of Crater Rim Drive collapsed into Kīlauea caldera in 2018 and this project is partially funded by the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R.

A USGS scientist checks the location to deploy a seismic node within Hiʻiaka Crater, in Hawaiʻi Volcanoes National Park, as part of the Kīlauea Seismic Imaging Project. The station is one of 1,800 that will collect data for the next two months.

A USGS scientist installs a seismic node within Pauahi Crater, in Hawaiʻi Volcanoes National Park, as part of the Kīlauea Seismic Imaging Project. The station is one of 1,800 that will collect data for the next two months.

A USGS scientist checks the location of the seismic node being installed within Pauahi Crater, in Hawaiʻi Volcanoes National Park, as part of the Kīlauea Seismic Imaging Project. The Hawaiian Volcano Observatory has a permanent monitoring network of several seismometers at the summit of Kīlauea that detect natural earthquakes, but more sei

A USGS scientist hikes into Pauahi Crater, in Hawaiʻi Volcanoes National Park, to deploy seismic nodes for the Kīlauea Seismic Imaging Project. The floor of Pauahi Crater is covered by lava that flowed into the crater during a Kīlauea East Rift Zone eruption in November 1979. USGS image by M. Patrick.

Seismic nodes are prepared to be deployed to Kīlauea summit on April 17 as part of the Kīlauea Seismic Imaging Project. The nodes will be temporarily placed on the surface of Kīlauea's summit region for the next two months and will collect data that will outline the geometry and nature of the magma system beneath Kīlauea summit. USGS image by S. Brantley.

A cache of seismic nodes (small earthquake-detecting devices) on Kīlauea caldera floor, which Hawaiian Volcano Observatory scientists deployed on April 17.

A Hawaiian Volcano Observatory geophysicist in front of seismic nodes that will be deployed across Kīlauea summit as part of the Kīlauea Seismic Imaging Project.

A Hawaiian Volcano Observatory scientist deploys one of 1,800 temporary seismic node stations that will be collecting data for the next two months in Kīlauea summit region.

A Hawaiian Volcano Observatory scientist uses a compass to check the orientation of a seismic node (blue) that was deployed on Kīlauea's summit caldera floor on April 17, 2023. The station is one of 1,800 that will collect data for the next two months.

A clear view across Kaluapele (Kīlauea summit caldera) on April 17, 2023, taken from Kūpinaʻi Pali (Waldron Ledge) on Crater Rim Trail in Hawaiʻi Volcanoes National Park.

Scientists at the Hawaiian Volcano Observatory deployed caches of seismic node instruments via helicopter around Kīlauea summit yesterday, April 17. Seismic nodes are small earthquake-detecting devices and 1,800 of them are being placed across Kīlauea summit for the next two months as part of the Kīlauea Seismic Imaging Project.

During a morning visit to Halema‘uma‘u rim on April 14, Hawaiian Volcano Observatory geologists had clear views across Kīlauea summit caldera. Kīlauea stopped erupting on March 7; currently, only steam and minor gas emissions are being emitted at the summit. USGS image by K. Mulliken.

A view from the west rim of Halema‘uma‘u crater the morning of April 14, 2023. In the foreground, the brown-colored island of tephra that formed in the early parts of the December 2020 eruption is clearly visible.

The west vent area within Halema‘uma‘u crater, at the summit of Kīlauea, viewed from the west rim of the crater. This vent was active during the September 2021-December 2022 eruption. An area near the west vent has persistently elevated temperatures visible in the F1 thermal cam, despite no active lava being visible for the past month.

The lava lake basin that formed during the September 2021-December 2022 eruption was steaming the morning of April 14, 2023. This lava lake formed in the western half of Halema‘uma‘u crater and is part of a tapestry of deposits that have formed during different Kīlauea summit eruptions over the past several years. USGS image by K. Mulliken.

A portion of Crater Rim Drive which fell into Halema‘uma‘u crater during the 2018 summit collapse remains visible on a block perched on the south wall of the crater (center of photo). The road's yellow center line makes a straight mark visible along the center of the block.

USGS geophysicists take gravity measurements on the dropped-down block of Kīlauea as part of annual monitoring. Annual microgravity surveys are crucial in confirming whether ongoing uplift or subsidence is caused by magma intrusion or withdrawal.

The Kīlauea summit eruption has been paused since Tuesday, March 7, 2023, and this reference map depicts the Halema‘uma‘u crater floor in its present noneruptive state. The eruption statistics provided here reflect activity up until the pause, since they are derived from measurements taken during a HVO helicopter overflight on Friday, March 10.

USGS scientist, Mike Poland, measures gravity using a gravimeter on the caldera floor of Kīlauea. Measurements of gravity can be used to determine how mass is distributed beneath a volcano. At Kīlauea, the Hawaiian Volcano Observatory (HVO) performs routine microgravity surveys to monitor volcanic activity and to determine changes in gravity. USGS photo by A.

Eruptive activity was paused during the Friday, March 10, overflight of Halema‘uma‘u, at Kīlauea summit. Numerous outgassing sites were present on the crater floor, but not active lava was present on the surface. USGS photo by M. Patrick.