High-rate (1-Hz and 50-Hz) GPS seismology: Application to the 2013 Mw 6.6 Lushan earthquake

被引：13

作者：

Lou, Yidong ^{[1
]}

Zhang, Weixing ^{[1
,2
]}

Shi, Chuang ^{[1
]}

Liu, Jingnan ^{[1
]}

机构：

[1] Wuhan Univ, GNSS Res Ctr, Wuhan 430079, Hubei, Peoples R China

[2] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Hubei, Peoples R China

来源：

JOURNAL OF ASIAN EARTH SCIENCES | 2014年 / 79卷

基金：

美国国家科学基金会;

关键词：

HRGPS; Lushan earthquake; Dynamic displacement; Coseismic offset; P wave arrival; GLOBAL POSITIONING SYSTEM; GROUND MOTIONS; DEFORMATION; RESOLUTION; MODEL; WAVE;

D O I：

10.1016/j.jseaes.2013.10.016

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The 2013 M-w 6.6 Lushan earthquake was successfully recorded by Crustal Movement Observation Network of China (CMONOC). Data from several near-field GPS sites were processed with kinematic PPP. The resultant position time series were subsequently processed with modified sidereal filtering and S transform to analyze seismic wave. Coseismic dynamic displacements and permanent offsets of 1-Hz sites have been retrieved and analyzed, and the P wave arrival was detected with the closest two 1-Hz stations. We compared the capacity of capturing seismic signals between 1-Hz and 50-Hz GPS measurements. The results suggest that 50-Hz GPS data are beneficial for obtaining more precise amplitude of dynamic displacements, more details of coseismic motions and broader frequency band of seismic signals. This is crucial for earthquake disaster assessment and source mechanism inversion. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：426 / 431

页数：6

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