摘要
2009年3月19日汤加MS7.9地震发生后,我们迅速利用地震破裂过程快速反演技术反演了全球地震台网(GSN)的宽频带波形资料,获得了这次地震的破裂过程.随后,收集了更多的资料重新进行了反演,反演结果的主要特征与快速反演结果基本一致.这次地震的震级为M7.8,破裂持续时间约为70s,断层面上主要有3个滑动量较大的区域.
We inverted the broadband seismic data of the Global Seismographic Network （GSN） and obtained the rupture process of the 2009 March 19 Tonga earthquake using the quick technique of the earthquake rupture process inversion soon after the earthquake occurred. Subsequently, more data were collected and the inversion was performed again. The main feature of the inverted result was in good agreement with that of the quick result. The moment magni- tude is Mw7.8, the rupture duration time is about 70 s, and there are 3 slipconcentrated patches on the fault plane.
出处
《地震学报》
CSCD
北大核心
2009年第2期226-229,236,共4页
Acta Seismologica Sinica
基金
中国地震局地震行业科研专项(200808068,200708031)资助
中国地震局地球物理研究所论著09AC1009
关键词
地震破裂过程
快速反演
地震应急响应
earthquake rupture process
quick inversion
earthquake emergency response
