Alaska earthquake: Volcano hit by HUGE QUAKE – Tanaga volcano rumbles on Aleutian arc

Thursday, September 27, 2018
By Paul Martin

EARTHQUAKES are once again rocking the US state of Alaska, adding to near constant activity in the region. The latest tremors were more intense than usual, and struck close to a volcano on the Aleutian island arc.

Thu, Sep 27, 2018

Alaska is well-known for its frequent earthquake activity, with constant low-magnitude earthquakes gripping the state.

The area is one of the most prone to rumblings of earthquakes pushing about 1-2 in magnitude, rarely causing significant damage.

Alaska’s mainland northern areas aren’t located on a plate boundary like California, but the lower region is, and is also part of the Pacific Ring of Fire.

The state has a grand total of 11 percent of the world’s earthquakes, and they also happen to centre around a number of volcanoes stationed on the Aleutian island arc.

The Alaskan Aleutian peninsula is a chain of far-flung islands located to the west of the US mainland.

Across this belt are a mass of 41 volcanoes at various stages of eruption, and tremors can be quite common in the area.

Most recently, the Tanaga volcano felt the effects of a 4.8 magnitude tremor, more than average for Alaska.

Shaking the area about 29 miles southwest of Tanaga, the earthquake could have prompted some activity.

Thankfully, the Tanaga volcano is largely inactive, and the most recent eruption occurred more than a century ago in 1914.

Even before the 1914 eruption, Tanaga’s activity was few and far between, with eruptions from 1763-1770, 1791, and 1829.

The area is not inhabited, and is mainly used by researchers to monitor the volcano and nearby earthquake activity.

Adak island is the nearest inhabited region, with a population of 332, stationed 81 miles west of Tanaga.

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