PSN-L Email List Message

Subject: Mount Hood
From: John & Jan johnjan@........
Date: Thu, 04 Jul 2002 07:07:46 -0600

>To:         Assistant Secretary for Water and Science
>             Chief of Staff
>             Director, Office of Communications
>From:       Barbara Wainman, Chief, Office of Communications, USGS
>Subject:    USGS Weekly Highlights, July 1-5, 2002
>I.  Departmental/Bureau News
>A.  Upcoming
>B. Current
>Record Earthquake at Mount Hood:  On June 29, the Mount Hood, Ore., area
>was shaken by a magnitude 4.5 earthquake located 3 miles below the south
>flank of the mountain.  As of July 2, there have been hundreds of
>aftershocks, including several felt events.  During the past 22 years of
>monitoring by the USGS and the Pacific Northwest Seismograph Network, the
>largest event detected prior to June 29 was M3.5.  At the present time, the
>events appear to be a typical mainshock/aftershock sequence of a tectonic
>earthquake.  Scientists have installed additional seismometers in the field
>and are watching events closely.  USGS will also monitor crustal movement
>and gas emissions.  (Willie Scott, Vancouver, WA, 360-993-8942)


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