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Pastimes : NNBM - SI Branch -- Ignore unavailable to you. Want to Upgrade?

To: abuelita who wrote (2234)	2/28/2001 8:22:03 PM
From: Dalin	Read Replies (2) \| Respond to of 104216

Which of those faults is under Seattle? "Normal" Wasn't sure of the answer, so I looked further: gldss7.cr.usgs.gov Earthquake Bulletin 01/02/28 18:54:33 UTC 47.15N 122.72W Depth: 52.4 km 6.8M WASHINGTON 10 miles (20 km) NE of OLYMPIA, Washington The following is a revised REPEAT revised release by the United States Geological Survey, National Earthquake Information Center: A strong earthquake occurred about 10 miles (20 km) northeast of Olympia, Washington at 11:54 AM MST today, Feb 28, 2001 (10:54 AM PST in Washington). A PRELIMINARY MAGNITUDE OF 6.8 WAS COMPUTED FOR THIS EARTHQUAKE. The magnitude has been revised based on further processing of available data. The preliminary mechanism for this earthquake is tensional (normal) faulting in the subducting (downgoing) Juan de Fuca Plate, caused by bending of the plate. Damage and injuries have occurred in the Olympia-Seattle area. The earthquake was felt as far away as Salt Lake City. This earthquake is located in the same general area as a magnitude 7.1 earthquake on April 13, 1949. In terms of energy released, today's earthquake is about one-third as strong as the 1949 quake. The location for this earthquake was furnished by the Geophysics Program, University of Washington, Seattle. The preliminary mechanism for this earthquake is tensional (normal) faulting in the subducting (downgoing) Juan de Fuca Plate, caused by bending of the slab. Interesting stuff........ Scott mentioned recycling.... Message 15427745 Amazing stuff, plate tectonics. What we felt was essentially the floor of the Pacific Ocean sliding under the North American Plate, 30 miles deep. Headed to become molten magma once again at somepoint down the road...talk about recycling. Go here, scroll down near the bottom and click on "how quakes form" , then "next", then put your pointer on "subduction" and you'll see what he means. msnbc.com Neat stuff! :0) Seismic Rambler