Unified Interior Regions
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The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.
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Kīlauea summit activity
Another explosion occurred at Halema‘uma‘u at 12:51 a.m. HST today, releasing energy equivalent to a magnitude-5.3 earthquake. Following the explosion, summit activity consisted mostly of passive degassing at Halema‘uma‘u, similar to what is shown in this image taken mid-morning. Seismicity at the summit decreased after the explosion, but has been increasing throughout
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Kīlauea Volcano — Lava Delta at Kapoho Bay
A closer aerial view of the lava delta forming at the Kapoho Bay ocean entry, where fissure 8 lava continued enter the ocean as of this morning. Laze (lava haze), an acidic white plume laced with tiny particles of volcanic glass, is produced by the ocean entry and creates an ongoing hazard that should be avoided.
A photogrammetry survey of Kīlauea's summit by the U.S. Department ...
A photogrammetry survey of Kīlauea's summit by the U.S. Department of Interior Unmanned Aircraft Systems' (UAS) Kīlauea response team show changes that have occurred at Halema‘uma‘u as of June 8. Cracks through the former overlook parking lot (bottom of image) wrap around the east margin of Halema‘uma‘u and extend to the north. New faulting and slumping apparent on west
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Kīlauea Volcano — Kapoho Bay Ocean Entry Plume
The fissure 8 lava flow reaches the ocean at Kapoho Bay, where a lava delta has formed and continues to grow as lava enters the sea. The largest white laze
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Kīlauea Volcano — Overflows from Fissure 8
Overflows of the upper fissure 8 lava channel this morning sent small flows of lava down the levee walls. These overflows did not extend far from the channel, so they posed no immediate threat to nearby areas. Channel overflows, like the ones shown here, add layers of lava to the channel levees, increasing their height and thickness.
Kīlauea Volcano — Topography of Halema`uma`u
A photogrammetry survey of Kīlauea's summit by the U.S. Department of Interior Unmanned Aircraft Systems' (UAS) Kīlauea response team show the topography of Halema‘uma‘u as of June 8. Cracks through the former overlook parking lot (bottom of image) wrap around the east margin of Halema‘uma‘u; the once-popular overlook viewing area (closed since 2008 due to volcanic hazards
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Kīlauea Volcano — Summit Explosion (June 10, 2018)
Another explosion occurred at Halema‘uma‘u at 12:51 a.m. HST today, releasing energy equivalent to a magnitude-5.3 earthquake. Following the explosion, summit activity
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Kīlauea Volcano — Halema‘uma‘u Cracking
Another aerial view showing prominent cracking around Halema‘uma‘u from the ongoing subsidence at Kīlauea's summit. The steaming cracks in the background have been observed for several days.
Fissure 8 and lava channel in the LERZ of Kīlauea during this after...
Fissure 8 and lava channel in the lower East Rift Zone of Kīlauea Volcano during this afternoon's overflight, with no apparent slowing in the eruption rate. The lava channel remained incandescent all the way around Kapoho Crater before entering the ocean.
Kīlauea Volcano — GPS Measurements at Summit
USGS-HVO geophysicists installed additional continuous GPS stations around Halema‘uma‘u this morning. These stations will allow scientists to better monitor and measure the ongoing subsidence of Halema‘uma‘u and the adjacent
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Kīlauea Volcano — Fissure 8 Lava Channel
Fissure 8 and lava channel in the lower East Rift Zone of Kīlauea Volcano during this afternoon's overflight, with no apparent slowing in the eruption rate. The lava channel remained incandescent all the way around Kapoho Crater before entering the ocean.
Kīlauea Volcano — Kapoho Ocean Entry
An aerial view of the Kapoho ocean entry, as of 6:30 a.m. HST today, shows the extent of the lava delta, now about 200 acres in size, that has formed over the past six days (lava first entered the ocean on the night of June 3). Across the front of the delta, plumes of laze—created by molten lava interacting with seawater—appeared diminished this morning, but was probably
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Time-lapse sequence of lava lake activity at Halema‘uma‘u
Another rockfall triggers an explosive event in the summit lava lake
In mid-November 2016, 70 representatives of volcano observatories from 20 volcanically active nations around the world came together in Vancouver, Washington, to share techniques, lessons learned, and challenges faced in preparing effective, useful volcano hazard maps and analyses.
Views of the Kamokuna ocean entry
Ocean entry continues, with breakout near Pu‘u ‘Ō‘ō
Rockfall triggers an explosive event in summit lava lake
A clear evening provides stunning views of the summit lava lake
Breakout on the 61g lava flow field
Everyone extrapolates facts and makes assumptions based on those facts. Sometimes, such an assumption is repeated so often that it takes on the aura of a "fact" itself. This is the story of how one such assumption about Kīlauea's recent past was proven wrong—and only in the past couple of months!
Breakout from episode 61g vent
High on the slopes of Mauna Loa, the largest active volcano on Earth, a unique Hawaiian seabird struggles for survival.
Typical lava lake activity within Halema‘uma‘u
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Pacific Island Ecosystems Research Center
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