Hawaii's Kilauea volcano jolts with lava, quakes and gas

phys.org | 5/5/2018 | Staff
katz1234 (Posted by) Level 3
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Sputtering lava, strong earthquakes and toxic gas jolted the southern part of the Big Island of Hawaii as magma shifted underneath a restless Kilauea volcano.

The trifecta of natural threats forced stressed out residents to evacuate and prompted the closure of parks and college campuses on Friday.

Vents - Lava - Ground - Neighborhood - Molten

Multiple new vents, from which lava is spurting out of the ground, formed in the same residential neighborhood where molten rock first emerged Thursday. At midday, a magnitude 6.9 earthquake struck—the biggest of hundreds of quakes this week and the largest to strike the state in 43 years. Residents were also warned to watch out for dangerous levels of sulfuric gas.

Hawaiian Volcano Observatory spokeswoman Janet Babb said the earthquakes reflected the volcano adjusting to the shifting magma.

Magma - Rift - Zones - Stress - Flank

"The magma moving down the rift zones, it causes stress on the south flank of the volcano," Babb said. "We're just getting a series of earthquakes."

She said scientists were studying whether the quakes would affect the eruption.

Lake - Kilauea - Summit - Crater - Magma

The lava lake at Kilauea's summit crater dropped significantly, suggesting the magma was moving eastward toward Puna, a mostly rural district of forests, papaya farms and lava fields left by past eruptions.

Officials ordered more than 1,700 people out of Big Island communities near the lava, warning of the dangers of spattering hot rock and high levels of sulfuric gas that could threaten the elderly and people with breathing problems. Two homes have burned.

Julie - Woolsey - Home - Thursday - Vent

Julie Woolsey evacuated her home late Thursday as a volcanic vent, or an opening in the Earth's surface where lava emerges, sprouted up on her street in the Leilani Estates neighborhood.

Lava was about 1,000 yards from her home, which Woolsey built on a lot purchased for $35,000 11 years ago after living on Maui became too expensive.

Volcano

"We knew we were building on an active volcano," she said, but added that she...
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