7.0M Earthquake Strikes Anchorage, Alaska

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According to USGS, the November 30, 2018, Mw 7.0 earthquake near Anchorage, Alaska, occurred as the result of normal faulting at a depth of about 40 km.

The quake hit about 8:30 a.m. local time some 10 miles northeast of Anchorage, at a depth of 21 miles, according to the US Geological Survey. Aftershocks continued after the tsunami warning was canceled.

Earthquakes are common in this region. Over the past century, 14 other M 6+ earthquakes have occurred within 150 km of the November 30, 2018 event. Two of these – a M 6.6 earthquake in July 1983 and a M 6.4 event in September 1983 – were at a similarly shallow depth and caused damage in the region of Valdez.

The M 9.2 great Alaska earthquake of March 1964, was an interface thrust faulting earthquake that ruptured over several hundred kilometers between Anchorage and the Alaska-Aleutians trench, and to the southwest.

 

 

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