The peak acceleration values from each station are as follows (click on each station name to view the accelerogram; each accelerogram has peak values listed in the upper right):

• 0.0006g, SEA, vertical component, University of Washington, Seattle. (Vertical scale and peak values are too small by a factor of 2).
• 0.0006g, MPL, north component, BPA Maple Valley Power Station (added 7/1/97). (Vertical scale and peak values are too small by a factor of 2).
• 0.0008g, UPS, north component, University of Puget Sound, Tacoma. (Vertical scale and peak values are too small by a factor of 2).

Note that the peak values for this aftershock are about 10 times smaller than those for the Bremerton mainshock.

Here is a map showing the locations of the strong motion instruments.

Here is a photograph of the instrument at the University of Puget Sound.

The information presented in this document is preliminary. It will be modified after additional analysis of the accelerograms.

Back to
PNSN Strong Motion Home Page.
Dept. of Earth and Space Sciences.