摘要
近年来,GPS测速已经成为研究GPS地震学的一种重要方法。本文介绍了GPS测速的原理,并尝试将GPS测速应用于地震监测中。利用单站高频GPS数据,对2011年日本大地震和2012年新疆地震期间的GPS测速结果和同震位移进行了分析。结果表明,单站GPS测速无需其他参考站信息和精密轨道钟差,其测速精度达到几个mm/s,同时能反演地震期间观测站的速度变化信息和震中与监测站的位置关系,可为地震监测提供一种有效可行的方式。
GPS velocity monitoring has been an important method in GPS seismology in recent years. The theory of GPS velocity is introduced in a brief way. Then it is applied in the earthquake monitoring. Based on the stand-alone high-rate GPS data,the Japan earthquake in 2011 and Xinjiang earthquake in 2012 are analyzed by using this method. The performance of GPS velocity variation and coseismic displacements are presented in detail. The results show that without using other reference stations or precise orbit clock,the stand-alone GPS velocity monitoring has a precision of several mm/s and thus can reflect the station velocity variation and the distance to the epicenter,which is an effective way for earthquake monitoring.
作者
潘东毅
褚锡星
张益泽
Pan Dongyi1 , Chu Xixing1 , Zhang Yize2(1. Huzhou Vocational ＆ Technical College, Huzhou 313000, China; 2. College of Surveying and Geo-Informatics, Tongji University, Shanghai 20009, Chin)
出处
《工程勘察》
2018年第4期61-64,共4页
Geotechnical Investigation & Surveying
关键词
单站GPS测速
高频GPS
震中
同震位移
the stand-alone GPS velocity
high-rate GPS
epicenter
coseismic displacement
