Monday, November 29, 2021

Volcanic Activity At The Long Valley Caldera Supervolcano - Imminent Eruption?

There are alarming signs of volcanic activity and imminent eruption of THE LONG VALLEY CALDERA SUPERVOLCANO in California
Strange Sounds

THE LONG VALLEY CALDERA supervolcano is considered to be one of the world’s most dangerous, with signs that an eruption is “imminent” having surfaced across the Californian region.

Long Valley Caldera is a depression in eastern California that sits next to the Mammoth Mountain.

One of the planet’s largest calderas — a huge, cauldron-like hollow that forms after an eruption — it measures a staggering 20 miles long and 11 miles wide, and is up to 3,000 feet deep.

It was originally formed 760,000 years ago when a devastating eruption released hot ash that later cooled and formed the Bishop tuff, a welded tuff that characterises the region.

Ash was sent eight miles into the air, with deposits believed to fall as far east as Kansas.

Despite the absolute chaos that Long Valley could cause if it were to erupt, little is said of it. Instead, more attention is placed on Yellowstone, another supervolcano hundreds of miles to the north east.

Yet, according to the Science Channel, Long Valley could well be on its way to erupting.

The supervolcano and its recent activity was explored during the channel’s 2017 documentary, ‘Secrets of the Underground’.

Rob Nelson, a scientist and the show’s narrator, said: “There are alarming signs of possible volcanic activity.

And there are clues pointing towards an imminent eruption scattered throughout this valley — the site of the second largest explosive volcanic eruption in North America.

An investigation carried out by the Science Channel in a part of the valley found several instances of smoke billowing out from beneath the ground.

Jared Peacock, a geophysicist, also pointed out an alarming feature of the caldera that could spell trouble using InSAR data that has monitored the region for the last 20 years.

One of the most troubling areas InSAR pinpointed happened to be very close to Mammoth Lakes, a town in the Sierra Nevada mountains.

Pointing to a map created from the data, Mr Peacock said: “Right here in the middle, you see there’s a resurgent dome.

A baking-hot red point is pictured located directly beneath the ground, where magma likely resides.

Mr Peacock added: “Something underneath it is pushing it upwards.

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