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Hawaii’s Mauna Loa, the World’s Largest Active Volcano, Is Erupting For First Time in 38 年

Mauna Loa

Mauna Loa

照片: CORBIS/Corbis via Getty

Mauna Loa, one of the world’s largest active volcanoes, is erupting for the first time in 38 years on Hawaii’s Big Island.

The eruption began in Moku’āweoweo, the summit caldera of Mauna Loa, 大约 11:30 下午. local time on Sunday, according to the National Weather Service in Honolulu.

The Hawaii Emergency Management Agency said there have been some reports of lava overflowing into the southwest portion of the caldera, but saidthere are NO indicationsthat the flow poses a threat to populated areas.

同时, 一个 Ashfall Advisory has been issued for the island through 10 是. Monday morning, with up to a quarter-inch of ash expected downwind of the volcano, according to Hawaii EMA.

The NWS warned that winds may carry hazards such as volcanic gas, fine ash andPele’s hair,” a phenomenon named after the Hawaiian goddess of volcanoes that creates thin glass fibers during an eruption.

Hawaii County has opened shelters in Ka’u at the Robert Herkes Gymnasium in Pahala, and at the Old Airport Gymnasium at Kailua Park in Kailua-Kona, according to the Hawaii County Civil Defense Agency.

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Mauna Loa is coming off itslongest quiet period on record,” according to the U.S. Geological Survey. The last eruption occurred 在 1984, with lava flow that missed the largest population center of the island by 4.5 英里.

Mauna Loa

Mauna Loa

美联社/Shutterstock

Mauna Loa’s recent stretch ofheightened unrestbegan in mid-September, according to the USGS. 当时, earthquakes around the volcano had increased from 10 到 20 per day to 40 到 50 per day.

在十月, the Hawaii Volcanoes National Parks Service closed the summit backcountry indefinitelydue to elevated seismic activity.

Hazards typically associated with Mauna Loa eruptions includevoluminous, fast-moving lava flows,” volcanic gas, dense smog andpotentially large and destructive earthquakes,” according to the USGS.

Mauna Loa typically erupts lava at a very high rate, similar to the 2018 eruption of Kīlauea,” the agency said on its website.

Approximately half of Mauna Loa’s eruptionsremain confined to [这] summit areaand do not threaten nearby communities, per the USGS.