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Using 1-Hz GPS data to measure deformations caused by the denali fault earthquake

Science

By:
, , and
DOI: 10.1126/science.1084531

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Abstract

The 3 November 2002 moment magnitude 7.9 Denali fault earthquake generated large, permanent surface displacements in Alaska and large-amplitude surface waves throughout western North America. We find good agreement between strong ground-motion records integrated to displacement and 1-hertz Global Positioning System (GPS) position estimates collected ??? 140 kilometers from the earthquake epicenter. One-hertz GPS receivers also detected seismic surface waves 750 to 3800 kilometers from the epicenter, whereas these waves saturated many of the seismic instruments in the same region. High-frequency GPS increases the dynamic range and frequency bandwidth of ground-motion observations, providing another tool for studying earthquake processes.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Using 1-Hz GPS data to measure deformations caused by the denali fault earthquake
Series title:
Science
DOI:
10.1126/science.1084531
Volume
300
Issue:
5624
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1421
Last page:
1424