Tag Archive | "mauna loa"

1950 Mauna Loa eruption. Label on back: “Official Photo, U.S. Air Force.”

Volcano Watch: What happens to lava flows after they enter the ocean?

Does lava continue to flow exactly as it did on land or does it behave differently after it enters the ocean?

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Volcano Watch: Is Mauna Loa gaining weight?

How we use gravity to monitor volcanoes takes advantage of the knowledge that the pull of gravity is stronger when there is more mass beneath the spot where it’s measured.

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This 1891 map shows much of the saddle between Mauna Kea (at top of map) and Mauna Loa. Lava flows depicted as black irregular shapes in the lower half of the map were erupted from Mauna Loa, with labeled ages ranging from “ancient” to 1881. The Mauna Kea branch of the 1880–1881 lava flow, visible as a small, thumb-shaped flow at the bottom center of the map, sits atop the much larger 1855–1856 lava flow that also threatened Hilo. To see details of this extraordinary map, go to http://ags.hawaii.gov/survey/map-search/, enter "1718" in the "Registered Map No." box, and click "Search" to open the full resolution map. Map courtesy of Hawaii State Archives.

Volcano Watch: Map and newspaper archives help unravel the eruptive histories of Hawaiian volcanoes

USGS Hawaiian Volcano Observatory scientists extract as much insight as possible from historic accounts of eruptions, and then combine that information with current observations.

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Volcano Watch: Restless activity beneath Mauna Loa continues

The recent high lava lake levels at Kīlauea Volcano have caught the attention of visitors and kama‘aina alike. But we shouldn’t forget that unrest at Mauna Loa continues.

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The Mauna Loa Solar Observatory with Mauna Kea in the background. Photo courtesy of MLSO

Volcano Watch: Mauna Loa Observatory — The Keeling Curve recognized as landmark science

Continuous CO2 monitoring began on Mauna Loa in 1958, when Charles David Keeling installed state-of-the-art instrumentation high on the remote north flank of the volcano and began carefully measuring the amount of CO2 in the air.

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Volcano Watch: Mauna Loa lava flow blazed a trail for the Saddle Road

A look back at the 1880-1881 Mauna Loa lava flow and the threat that it posed to Hilo.

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‘A‘ā lava flows erupt from the Northeast Rift Zone of Mauna Loa on March 25, 1984—the first day of the volcano’s most recent eruption. USGS photo.

Volcano Watch: Mauna Loa: Quiet for many years, but not to be forgotten

Over the past few months, Mauna Loa, Hawai‘i Island’s largest volcano, has shown subtle signs of stirring from its 31-year-long slumber (its most recent eruption began on March 25, 1984).

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Big Island summits experiencing strong winds and winter conditions

The National Weather Service in Honolulu has issued a high wind warning for Big Island summits until 4 a.m. Friday (March 13). Winds are coming from the west at 45-65 mph with gusts over 66 mph. A Winter weather advisory remains in effect for Big Island summits above 11,000 feet in elevation until 6 a.m. […]

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Snow and 105 mph winds trigger winter and wind advisories for Big Island summits

The National Weather Service in Honolulu has issued a winter weather advisory and high wind warning for Big Island summits until 6 p.m. this evening (March 9). Snow and ice accumulations along with freezing fog will deposit up to one inch of new snow on Big Island summits over 12,500 feet in elevation.

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Mauna Kea summit area Saturday morning (March 7). Photo courtesy of UH-Hilo.

High wind warning for Big Island summits

The National Weather Service in Honolulu has issued a high wind warning for the summits of Mauna Loa and Mauna Kea until 6 a.m. Monday (March 9). Winds are coming from the west at 45-70 mph with localized gusts over 90 mph. The strongest winds are expected to be Sunday day and night.

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Winter storm warning for Big Island summits, summit road closed

The National Weather Service in Honolulu has issued a winter storm warning for Big Island summits above 12,000 feet until 6 a.m. Thursday (March 5).

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Webcam image on Mauna Kea summit area 4:30 p.m. HST Tuesday, (March 3). Image courtesy of UH-Hilo

Winter storm warning for Big Island summits

The National Weather Service in Honolulu has issued a winter storm warning for Big Island summits above 12,000 feet until 6 a.m. Thursday (March 5).

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Sep 4, 2015 / 5:15 pm

 

 

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