Archive | Volcano

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Volcano Watch: Kilauea activity update for June 22, 2017

On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna.

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Left: A color-shaded bathymetry map of Lō‘ihi, a submarine volcano located southeast of the Island of Hawaiʻi. The summit region is marked by pit craters formed in connection with an eruption and earthquake swarm in July–August 1996. Right: Earthquakes in the vicinity of Lō‘ihi (same area as bathymetry map) located by the USGS Hawaiian Volcano Observatory during a 30-day period ending June 22, 2017. Locations of the earthquakes are shown with dots; size indicates magnitude and color indicates time (blue represents earthquakes within two days of June 22, yellow within two weeks, and white within four weeks). For example, the blue dot east of Lō‘ihi was a magnitude-2.3 earthquake that occurred on June 22.

Volcano Watch: HVO logs renewed seismic activity at Lō‘ihi

The most recent confirmed eruption of Lō‘ihi occurred in 1996. That year, an energetic earthquake swarm began in July and quickly intensified, motivating a scientific expedition to Lō‘ihi.

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Volcano Watch: Kilauea activity update for June 15, 2017

This past week, Kīlauea Volcano’s summit lava lake fluctuated in concert with summit inflation and deflation, with levels ranging around 13–38.5 m (43–126 ft) below the vent rim.

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This photo from a video clip shows HVO geologist Tim Orr sampling lava from an active pāhoehoe breakout on the episode 61g lava flow. The chemistry of these lava samples provides information on the magma plumbing system. Sampling has been a regular part of monitoring Kīlauea Volcano's ongoing Pu‘u ‘Ō‘ō eruption. Photo taken Wednesday, May 31, 2017 courtesy of USGS/HVO

Volcano Watch: HVO’s masked geologist heads north to Alaska

A USGS Hawaiian Volcano Observatory geologist collecting lava samples wears a face mask to protect against the intense radiant heat. The mask also conceals the wearer’s identity, “Who is that masked geologist?”

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Volcano Watch: Latest upgrade of seismic stations at Kīlauea summit completed

Field engineers at the USGS Hawaiian Volcano Observatory (HVO) recently completed a multi-year effort to upgrade a subset of seismic stations at the summit of Kīlauea Volcano.

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A view of the northern Overlook crater wall, through passing fume. The lake surface (lower left in photo) was about 22 meters (72 feet) below the crater rim (upper right in photo). The uppermost section of the crater wall is formed by stacks of thin overflows from mid-2015. The main section of the wall, with a light pink color here, is the older portions of the Halema‘uma‘u Crater floor, formed from lava flows that filled the crater decades ago. At the base of the wall, spattering from the lake has deposited a thin black veneer of lava on the crater wall. Sometimes these spatter deposits built out small ledges, and form bulbous protrusions (center of photo) when the lake level drops. Photo taken Sunday, June 4, 2017 courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for June 8, 2017

This past week, Kīlauea Volcano’s summit lava lake fluctuated in concert with summit inflation and deflation, with levels ranging around 21–37 m (69–121 ft) below the vent rim.

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Waveform at Mauna Loa Estates.

USGS/HVO update on 5.3 magnitude quake Thursday (June 8)

The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-5.3 earthquake located beneath Kīlauea Volcano’s south flank on Thursday, June 8, 2017, at 7:01 a.m. HST.

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At 7:01 a.m. HST on Thursday, June 8, 2017 a 5.3 magnitude quake struck the south flank of Mauna Loa. USGS Graphic

Magnitude 5.3 quake jolts Hawaii Island Thursday morning, no tsunami threat

A moderate earthquake on the south flank of Kilauea occured at 7:01 a.m. HST with a magnitude of 5.3. There is no tsunami threat from this quake.

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Volcano Watch: Tracking the latest moves of Kīlauea and Mauna Loa

A diverse array of techniques is utilized to monitor volcanoes around the world, including those in Hawaiʻi.

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This photo from a video clip shows HVO geologist Tim Orr sampling lava from an active pāhoehoe breakout on the episode 61g lava flow. The chemistry of these lava samples provides information on the magma plumbing system. Sampling has been a regular part of monitoring Kīlauea Volcano's ongoing Pu‘u ‘Ō‘ō eruption. Photo taken Wednesday, May 31, 2017 courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for June 1, 2017

On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna and scattered surface breakouts downslope of Pu‘u ‘Ō‘ō.

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Volcano Watch: Volcanoes, Landslides, and Angry Gods—A Pacific Northwest Connection

Both volcanoes and landslides are important for landscape evolution in Hawaii and worldwide. In Washington State, an old legend makes the connection between them.

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Volcano Watch: Kilauea activity update for May 25, 2017

On the East Rift Zone, the 61g flow remained active, with lava entering the ocean near Kamokuna and surface breakouts downslope of Pu‘u ‘Ō‘ō.

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Jun 28, 2017 / 5:15 pm

 

 

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