Archive | Volcano

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Volcano Watch: Progress can be slow but adds up

Hawaiian volcanoes seem to remain active for several hundred thousand, perhaps a million, years. Mauna Loa is well into its life span and will, eventually, be replaced by Lōʻihi, now a large and growing seamount south of the island.

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Volcano Watch: Kilauea activity update for December 14, 2017

This past week, Kīlauea Volcano’s summit lava lake level generally rose in concert with summit inflation, ranging from about 50 to 30 m (98–162 ft) below the vent rim.

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(B-2889-11.P.S.A.C.) (4.18.26.) (20-2000) Eruption of Mauna Loa lava advancing upon Hoopuloa Landing. Height of lava flow 50 ft. – Width 1500 ft.  [Stamp on back] -  Picher 2124 Matt-Smith Drive, Honolulu, Hawaii 96822 CB 3889

Volcano Watch: January is Volcano Awareness Month on the Island of Hawaiʻi

Volcano Awareness Month was established by mayoral proclamation, USGS Hawaiian Volcano Observatory (HVO) scientists will offer a series of programs in January to help keep residents and visitors informed about Hawaiian volcanoes.

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Volcano Watch: Kilauea activity update for December 7, 2017

On the East Rift Zone, the 61g lava flow remained active downslope of Pu‘u ‘Ō‘ō, with scattered breakouts on the pali and coastal plain, but no ocean entry.

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Volcano Watch: Did aerial bombing stop the 1935 Mauna Loa lava flow?

A widely-held belief is that Thomas Jaggar, founder of the Hawaiian Volcano Observatory, was able to stop a Mauna Loa lava flow in 1935. But is it true?

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Volcano Watch: Kilauea activity update for November 30, 2017

n the East Rift Zone, the 61g lava flow remained active downslope of Pu‘u ‘Ō‘ō, with scattered breakouts on the pali and coastal plain.

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Volcano Watch: What do we call new land at Kīlauea Volcano’s ocean entries?

“Lava delta” is now the accepted geologic characterization. But, because the word “bench” was used for so long, it can be hard to transition to a different name. As we all know, bad habits are hard to break.

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Volcano Watch: Kilauea activity update for November 23, 2017

On the East Rift Zone, the 61g lava flow remained active downslope of Pu‘u ‘Ō‘ō, with scattered breakouts on the coastal plain.

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Volcano Watch: Kilauea activity update for November 16, 2017

On the East Rift Zone, the 61g lava flow remained active downslope of Pu‘u ‘Ō‘ō, with scattered breakouts on the coastal plain.

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Volcano Watch: Drive along Saddle Road reveals outstanding volcanic geology

The Daniel K. Inouye Highway, separates Mauna Kea and Mauna Loa This Saddle area showcases outstanding volcanic geology and is easy to reach for “roadside geologists.”

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Volcano Watch: Magma – What’s hot and what’s not

Scientists at the USGS Hawaiian Volcano Observatory routinely collect lava samples from Kīlauea and use the chemistry of these samples to infer the temperature of magma.

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Volcano Watch: Kilauea activity update for November 9, 2017

This past week, Kīlauea Volcano’s summit lava lake level fluctuated with summit inflation and deflation, ranging about 28–34 m (92–112 ft) below the vent rim.

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Volcano Watch: Threat Rankings of our Nation’s geologically young volcanoes

Careful readers of the USGS Hawaiian Volcano Observatory website might have noticed mention of “threat rankings” in the lower right corner of our home page which range from “very high threat potential” to ”moderate threat potential,” and, “not ranked.”

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Volcano Watch: Kilauea activity update for November 2, 2017

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

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