Rapid Slip Inversion Using Co-Seismic Displacement Data Derived from Near-Source Strong Motion Records
详细信息
- 责任者：Jin Mingpei (Office of the Western Yunnan Earthquake Prediction Study Area ; China Earthquake Administration ; Dali 671000 ; China) ; Wang Rongjiang
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(4)
- 关键词：强震 ; strong earthquakes ; 位移反分析 ; back-analysis of displacement ; 日本 ; Japan
- 页码：p.1207-1215
- 图表：illus., 1 table, 47 refs.
- 分类号：0500
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Near-source co-seismic displacement field of the 2008 Mw6.9 Iwate-Miyagi Nairiku(Japan) earthquake is estimated from digital strong-motion records after correction for their baseline errors using an improved empirical method and compared with the GPS observations.Furthermore,different slip models of the earthquake are inverted from the GPS and strong-motion based displacement data separately and jointly,which are in good agreement.Based on these results,we conclude that using a dense strong-motion network,near real-time recovery of co-seismic displacement of large earthquakes is feasible and therefore useful in context of seismic early warning and rapid response systems.Finally,we discuss the minimum requirements on the strong-motion data that ensure a reliable recovery of the co-seismic displacement.