地震学报Issue(5)：733-746,14.DOI:10.11939/jass.2015.05.003
2012年6月24日宁蒗-盐源MS5.7地震的精确定位
Accurate Iocation of the June 24,2012 NingIang-Yanyuan MS5.7 earthquake
摘要
Abstract
This paper relocated the 24 June 2012 Ninglang-Yanyuan MS 5.7 earthquake and its aftershock sequence with double-difference earthquake loca-tion algorithm.Firstly,we used the cross-correlation technique in time domain to deal with waveform data and got high accuracy differential travel-time data of event pairs.And then we used three different data sets,which are catalog data,waveform cross-correlation data, and catalog data plus waveform cross-correlation data,as the initial data to relocate the Ninglang-Yanyuan earthquake sequence.Comparing the location of main shock,the number of events involved in relocation,the number of events relocated and relocation error for the three data sets,it is suggested that the relocation result of the third data set is the best.The result shows that the original time of the main shock is 15:59:32.74 (Beijing Time)on 24 June 2012,hypocenter location is (27.790°N,100.707°E), and the focal depth is 10.4 km.Our research also shows that the nearby Yong-ning fault is the seismogenic structure of Ninglang-Yanyuan MS 5.7 earthquake sequence.关键词
宁蒗-盐源 MS 5.7/地震/双差定位/波形互相关/永宁断裂Key words
Ninglang-Yanyuan MS 5.7 earthquake/double-difference relocation/waveform cross-correlation/Yongning fault分类
天文与地球科学引用本文复制引用
王光明,朱良保,苏有锦,王清东..2012年6月24日宁蒗-盐源MS5.7地震的精确定位[J].地震学报,2015,(5):733-746,14.基金项目
国家自然科学基金（41374053）和国家测绘地理信息局测绘基础研究基金（13-02-06）共同资助． （）
