球面交切法地震定位

英文篇名：METHOD OF SPHERICAL SURFACE SHEARING IN EARTHQUAKE LOCATION
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：廉超 ; 李胜乐 ; 董曼 ; 蔡永建 ; 张卫华
英文作者：Lian Chao1 ; 2) ; Li Shengle1 ; 2) ; Dong man1 ; 2) ; Cai Yongjian1 ; 2) and Zhang Weihua1 ; 2) 1)Institute of Seismology ; CEA ; Wuhan 430071 2)Crustal Movement Laboratory ; Wuhan 430071
中文关键词：球面交切法 ; 地震定位 ; S-P到时差 ; 三峡水库 ; 实效性
英文关键词：the method of spherical surface shearing ; earthquake location ; S-P arrival time difference ; Three Gorge reservoir ; effectiveness
出版日期：2006-05-30
机构：中国地震局地震研究所,地壳运动与地球观测实验室武汉430071,中国地震局地震研究所,地壳运动与地球观测实验室,武汉430071,中国地震局地震研究所,地壳运动与地球观测实验室,武汉430071,中国地震局地震研究所,地壳运动与地球观测实验室,武汉430071,中国地震局地震研究所,地壳运动与地球观测实验室,武汉430071,,武汉430071,武汉430071,武汉430071,武汉430071,武汉430071
年：2006
期：02
出版单位：大地测量与地球动力学

摘要

提出了适合于近震及远震定位的球面交切法。该方法在球面上直接进行交切运算,只要知道3个以上台站的S-P到时差(或只要根据震相求出震中距)就能快速定出震中位置,台网布局、震源深度、发震时刻对震中定位的影响较小。使用该方法对三峡水库蓄水以后发生的较大地震进行了精确定位,结果表明其应用效果较好。
The method of spherical surface shearing suitable for the location of near and far earthquake was proposed.The shearing calculation can be done directly on the sphere with the method,the epicenter can be rapidly located with only S-P arrival time differences of 3 stations at least.The station distribution,focal depth and origin time affect on the epicenter location less.As the examples,a M3.5 earthquake after impoudment in the Three Gorges Reservoir and a teleseism were located precisely with the method,the results show that the method is available.

引文

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