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浙江及邻区地震精定位及应用研究
邹振轩, 李俊, 周新民, 王政, 李金龙
浙江省地震局,杭州市古荡湾塘苗路7号310013
摘要:
对2006年2月~2010年4月浙江数字地震台网所有记录到的浙江及邻区范围内437个地震事件重新进行震相识别及定位,筛选出震相清晰且有4个台站记录的291个地震事件后,用双差地震定位法进行精确定位,得到多个事件内部相关事件之间的距离。结果表明,重新定位后地震震源的相对位置比常规地震定位方法得到的结果更加精确。此外本文得到了该区域内多个地震序列的精确活动图像,并根据新的定位结果讨论了地震分布、发震与断裂构造的关系,结果显示出较好的一致性。
关键词:  浙江及邻区 地震精定位 双差定位法
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基金项目:本研究得到浙江省级科技计划(2010C33079)资助
The digital seismic fine positioning and its application in Zhejiang and its adjacent areas
Zou Zhenxuan, Li Jun, Zhou Xinmin, Wang Zheng, Li Jinlong
Earthquake Administration of Zhejiang Province, Hangzhou 310013, China
Abstract:
437 digital seismic events recorded by the Zhejiang Digita! Seismic Network in Zhejiang and its adjacent area from February 2006 to April 2010 underwent a shock acquaintance and positioning. 291 events with clear phases recorded by 4 stations were screened out through the double difference earthquake location method for accurate positioning and multiple event internal distance between events was obtained. The results show that the repositioning of seismic source relative position is more accurate than conventional seismic location method. In addition this paper obtains accurate moving images of regional earthquake sequences, and according to the new positioning results discusses the distribution of earthquake and relationship between seismogenic structure and fracture. The conclusion shows a good consistency.[著者文摘]
Key words:  Zhejiang and its adjacent area Seismic fine positioning Double differencelocation method
《Earthquake in Chinc》
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