34 earthquakes rattle Mauna Loa, world’s largest active volcano, Hawaii and scientists say eruption is possible
The Big Island of Hawaii, home to the world’s largest active volcano, Mauna Loa, was rocked by 34 earthquakes on Sunday. While most of the earthquakes were low in magnitude, and none were strong enough to cause a tsunami, scientists warned citizens that an eruption from Mauna Loa could be possible in the near future.
“While an eruption of Mauna Loa is not imminent, now is the time to revisit personal eruption plans,” said a recent press release from scientists with the Hawaiian Volcano Observatory. “Similar to preparing for hurricane season, having an eruption plan in advance helps during an emergency.”
The largest active volcano on Earth, Mauna Loa reaches a height of 13,681 feet above sea level, and 3 miles below the Central Pacific to the ocean floor. “Mauna Loa” is Hawaiian for “Long Mountain.” The volcano covers half of the island.
The Big Island of Hawaii is also home to three other active volcanoes: Kilauea, Mauna Kea and Hualalai. Kilauea has been erupting since December.
Concern from scientists stems from the rate at which deformation, or changes to the volcano’s surface, are affecting Mauna Loa, as well as its seismicity, or the frequency of earthquakes. The Big Island has had more than 744 earthquakes in the last of a magnitude 1.5 or greater in the last 30 days.
U.S. Geological Survey scientists recommended residents have response plans and a “go-bag” ready in the case of an evacuation order.
“Nowadays, people pack ‘go’ bags containing essential items in case you have to leave your house under an evacuation order,” the USGS said. “You may want to include important documents, like your birth certificate, deeds, legal papers, and medications.”
According to the Hawaiian Volcano Observatory, Mauna Loa has erupted 33 times since 1843. Its last eruption lasted from March 25 to April 15, 1984.
Courtesy of thehill.com
A huge “fireball” meteor that lit up skies across west Alaska also set off newly installed sensors for detecting volcanic activity, the U.S. Geological Survey (USGS) has said.
The event, which took place on October 15, triggered six of the sensors’ alarms at a new monitoring station on the Kenai Peninsula. The sensors are built to detect low-frequency sound waves in the atmosphere during volcanic activity, but in this case they picked up waves coming from the meteor that had streaked across the sky around 360 miles away.
In a Facebook post, the USGS said the meteor also triggered an alarm at Mount Spurr—a large, active volcano that sits around 80 miles from Anchorage that last erupted in 1992. However, as other monitoring systems also picked up on the waves, “it quickly became clear that this was not activity at Mount Spur,” the post said.
Scientists with the USGS Alaska Volcano Observatory worked with researchers from the University of Alaska Fairbanks Geophysical Institute to investigate the cause. They found the meteor passed over Alaska around 40 miles from the Athabaskan community of Kaltag, which sits on the Yukon River.
In a blog post for the American Geophysical Union, UAF science writer Ned Rozell said witnesses reported the fireball in regions hundreds of miles apart. One resident of Ruby described it as an “enormous ball of light in the sky,” saying it was moving north to south. Another resident said it looked like “fireworks” that split into four dots.
David Fee, head of the infrasound program at UAF’s Geophysical Institute and researcher with the AVO, said he believes the meteor exploded somewhere east of Kaltag. “I typically don’t work on meteors, but they are often really nice infrasound sources to help better understand the performance of our networks, and I think provide valuable information on meteors and bolides themselves,” he said.
Courtesy of newsweek.com
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Depth: 4 km
Distances: 403 km N of Los Angeles, United States / pop: 3,793,000 / local time: 05:13:51.0 2017-10-25
184 km SE of Carson City, United States / pop: 55,300 / local time: 05:13:51.0 2017-10-25
92 km E of Mariposa, United States / pop: 2,200 / local time: 05:13:51.0 2017-10-25
3 km E of Mammoth Lakes, United States / pop: 8,300 / local time: 05:13:51.0 2017-10-25
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Depth: 11 km
204 km S of Salt Lake City, United States / pop: 187,000 / local time: 19:27:15.0 2017-09-28
21 km NE of Richfield, United States / pop: 7,600 / local time: 19:27:15.0 2017-09-28
1 km SW of Aurora, United States / pop: 1,100 / local time: 19:27:15.0 2017-09-28
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Depth: 7 km
Distances: 732 km S of Calgary, Canada / pop: 1,020,000 / local time: 02:02:02.1 2017-06-16
215 km S of Helena, United States / pop: 28,200 / local time: 02:02:02.1 2017-06-16
99 km S of Bozeman, United States / pop: 37,300 / local time: 02:02:02.1 2017-06-16
15 km N of West Yellowstone, United States / pop: 1,300 / local time: 02:02:02.1 2017-06-16
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Depth: 9 km
Distances: 403 km N of Phoenix, United States / pop: 1,445,632 / local time: 21:10:22.4 2016-07-04
34 km W of Kanab, United States / pop: 4,312 / local time: 22:10:22.4 2016-07-04
5 km E of Hildale, United States / pop: 2,726 / local time: 22:10:22.4 2016-07-04