Detection of arbitrarily large dynamic ground motions with a dense high‐rate GPS network
-
- Yehuda Bock
- Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics Scripps Institution of Oceanography La Jolla California USA
-
- Linette Prawirodirdjo
- Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics Scripps Institution of Oceanography La Jolla California USA
-
- Timothy I. Melbourne
- Department of Geological Sciences Central Washington University Ellensburg Washington USA
書誌事項
- 公開日
- 2004-03
- 権利情報
-
- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
-
- 10.1029/2003gl019150
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>We describe the detection of teleseismic surface waves from the 3 November 2002 Mw 7.9 Denali fault earthquake in Alaska with a dense network of 1 Hz GPS stations in southern California, about 3900 km from the event. Relative horizontal displacements with amplitudes in excess of 15 mm and duration of 700 seconds agree with integrated velocities recorded by nearby broadband seismometers with an rms difference of 2–3 mm. The displacements are derived from independent 1 Hz instantaneous positions demonstrating that a GPS network can provide direct measurements of arbitrarily large dynamic and static ground horizontal displacements at periods longer than 1 s and amplitudes above 2 mm, with an inherent precision (signal to noise) that improves indefinitely with amplitude without clipping and in real time. High‐rate, real‐time GPS networks can enhance earthquake detection and seismic risk mitigation and support other applications such as intelligent transportation and civil infrastructure monitoring.</jats:p>
収録刊行物
-
- Geophysical Research Letters
-
Geophysical Research Letters 31 (6), L06604-, 2004-03
American Geophysical Union (AGU)
