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单站GPS测速在实时地震监测中的应用

DOI: 10.6038/cjg20130615, PP. 1928-1936

Keywords: 高频GPS数据,单站GPS测速,实时地震监测,强震仪

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Abstract:

本文提出一种利用单站GPS载波相位或多普勒观测数据,基于单站GPS测速法实时确定地震监测台站运动状态(速度)的新方法.针对2010年4月4日发生于墨西哥BajaCalifornia(32.259°N,115.287°W)北部的Mw7.2级EI-Mayor-Cucapah地震事件,选取震中邻近区域(200km内)若干采样率为5Hz的高频GPS观测站数据进行实验.结果表明:基于新方法所得测站速度结果能够很好地反映出地震期间监测台站的瞬时运动状态,测站P496和P744计算的速度结果与其并置强震仪观测结果具有很好的一致性.

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