Intense earthquake swarm rattles Alaskan peninsula

Wednesday, June 13, 2012
By Paul Martin
June 13, 2012

ALASKA – An intense earthquake swarm continues to shake the peninsula of Alaska. A 4.8 was also reported in neighboring Kamchatka. The depth of the earthquakes striking Alaska range from 200 km to about 40 km (24.9 miles) and most are occurring about 429 km from the city of Anchorage. Alaska is without a doubt the most tectonically-active region in the United States. Alaska experiences more than half of all earthquakes recorded in North America each year. This is mainly due to Alaska’s unique location, which fits like a piece of a jigsaw puzzle on the northern rim of the Pacific Basin. At the northwest corner of the North America, Alaska is situated at the receiving end of the Pacific Plate as it slides laterally past southeast Alaska and collides directly with the North American Plate across south-central Alaska and along the length of Aleutian Island Chain. The accumulation of tectonic stresses at depth along the plate boundaries and the translation of those stresses into the shallower crust of southern Alaska are believed to be the driving forces behind the high level of earthquake activity that occurs in our state. We’re also seeing seismic stress rippling up the coast of the U.S. from Baja to Alaska. We may be heading for another seismic stress release. –The Extinction Protocol

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