Using 1-Hz GPS Data to Measure Deformations Caused by the Denali Fault Earthquake
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- Kristine M. Larson
- Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309–0429, USA.
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- Paul Bodin
- Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309–0429, USA.
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- Joan Gomberg
- Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309–0429, USA.
書誌事項
- 公開日
- 2003-05-30
- DOI
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- 10.1126/science.1084531
- 公開者
- American Association for the Advancement of Science (AAAS)
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説明
<jats:p>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 seismicinstruments 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.</jats:p>
収録刊行物
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- Science
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Science 300 (5624), 1421-1424, 2003-05-30
American Association for the Advancement of Science (AAAS)
