Strong Motion Network Operations Overview

[ 1. Introduction ] [ 2. Seismograms ] [ 3. Data Telemetry ] [ 4. Future ] [ 5. Status ]

2. Short-period vs strong motion seismograms

The figure below illustrates some differences between seismograms recorded by short-period sensors and strong motion sensors. The first seismogram was recorded by a typical vertical component short-period sensor. This seismogram shows saturation of the signal (clipping it off) due to large ground motions. The next three seismograms are the vertical, north-south, and east-west component of a wide dynamic range accelerometer and are recorded on-scale. This also illustrates how horizontal ground motions can be larger than vertical ground motions.

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Updated August 13, 2002

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University of Washington Dept. of Earth and Space Sciences, Box 351310 Seattle, WA, 98195-1310

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