Major Quake, Marianas

A shallow, major earthquake struck the Mariana Islands this morning.

Saturday 14th August 2010

A magnitude 7.2 earthquake struck undersea south of the Mariana Islands at 9:20 this morning, New Zealand time. The 5 km-deep quake was centred 375 km west-south-west of Guam, 445 km west-south-west of Rota in the northern Mariana Islands, according to the U.S. Geological Survey.

Geoscience Australia reports the quake as magnitude 7.1 at a depth of 33 km. It estimates the quake would have been felt up to 1400 km away.

The Pacific Tsunami Warning Centre reports the quake as magnitude 7.2 at a depth of 20 km. It advises that, based on historical data, a widespread tsunami threat does not exist.

The earthquake occurred in the vicinity of the Challenger Deep, an area of deep water on the edge of the Pacific Ocean and the Philippine Sea.

[Compiled from data supplied by the U.S. Geological Survey and its contributing agencies, Geoscience Australia, and the U.S. National Oceanic & Atmospheric Administration’s Pacific Tsunami Warning Centre.]

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