利用平滑先验信息方法分离高频GPS数据静态永久变形与地震波

doi:10.11947/j.AGCS.2018.20160648

测绘学报 ›› 2018, Vol. 47 ›› Issue (4): 490-497.doi: 10.11947/j.AGCS.2018.20160648

利用平滑先验信息方法分离高频GPS数据静态永久变形与地震波

姚依欣^1,2, 王勇^1,2, 詹金刚¹, 郭爱智¹

1. 中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室, 湖北武汉 430077;
2. 中国科学院大学, 北京 100049

收稿日期:2016-12-20 修回日期:2018-01-28 出版日期:2018-04-20 发布日期:2018-05-02
通讯作者: 王勇 E-mail:ywang@whigg.ac.cn
作者简介:姚依欣(1990-),男,博士生,研究方向为大地测量与地球动力学。E-mail:yaoyixin@asch.whigg.ac.cn
基金资助:
国家自然科学基金（41274084；40974044；41304040）

Separating Static Offset and Seismic Wave from High-rate GPS Data by the Smoothness Priors Method

YAO Yixin^1,2, WANG Yong^1,2, ZHAN Jingang¹, GUO Aizhi¹

1. State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-12-20 Revised:2018-01-28 Online:2018-04-20 Published:2018-05-02
Supported by:
The National Natural Science Foundation of China (Nos. 41274084;40974044;41304040)

摘要/Abstract

摘要： 震后高频GPS观测资料详细记录了地震引起的静态永久变形和地震波信息，如何实现二者的有效分离是准确反演地震参数的关键因素。本文引入平滑先验信息方法（SPM）对近几年3次地震的高频GPS数据进行处理和分析，尝试实现二者的有效分离。结果表明，SPM方法可以简单、快速、有效地分离高频GPS动态位移中的静态永久变形和地震波信息，数据处理结果完整、清晰地记录了由主震引起的静态永久变形、余震引起的静态永久变形和震后余滑位移以及地震波信息，可为准确反演震源参数、断层破裂过程提供重要的约束条件。

关键词: 平滑先验信息方法, 高频GPS, 静态永久变形, 地震波

Abstract: The high-rate GPS data recorded detailed information of the static offset and the seismic wave when the earthquake occurred.Accurate separation is very important for the rapid inversion and disaster assessment after earthquake.In this paper,the smoothness priors method (SPM) was introduced to deal with the high-rate GPS data.Through the processing and analysis of the high-rate GPS data from three different earthquakes in recent years,it is indicated that the SPM method can be used to separate the static offset and the seismic wave from high-rate GPS data simply,quickly and effectively.The processing results clearly recorded the information of the static offset induced by main shock and strong aftershock,the post-seismic deformation and the seismic wave,which can be provided to restrain the accurate inversion of the seismic source parameters and the fault rupture process.

Key words: smoothness priors method, high-rate GPS, static offset, seismic wave

中图分类号:

P228.4

姚依欣, 王勇, 詹金刚, 郭爱智. 利用平滑先验信息方法分离高频GPS数据静态永久变形与地震波[J]. 测绘学报, 2018, 47(4): 490-497.

YAO Yixin, WANG Yong, ZHAN Jingang, GUO Aizhi. Separating Static Offset and Seismic Wave from High-rate GPS Data by the Smoothness Priors Method[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(4): 490-497.

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利用平滑先验信息方法分离高频GPS数据静态永久变形与地震波

Separating Static Offset and Seismic Wave from High-rate GPS Data by the Smoothness Priors Method

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