Using 1-Hz GPS data to measure deformations caused by the denali fault earthquake
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.
Citation Information
Publication Year | 2003 |
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Title | Using 1-Hz GPS data to measure deformations caused by the denali fault earthquake |
DOI | 10.1126/science.1084531 |
Authors | K.M. Larson, P. Bodin, J. Gomberg |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Science |
Index ID | 70025684 |
Record Source | USGS Publications Warehouse |