| 球面交切法地震定位 |
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| 引用本文： | 廉超,李胜乐,董曼,蔡永建,张卫华.球面交切法地震定位[J].大地测量与地球动力学,2006,26(2):99-103. |
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| 作者姓名： | 廉超 李胜乐 董曼 蔡永建 张卫华 |
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| 作者单位： | 中国地震局地震研究所,武汉,430071;地壳运动与地球观测实验室,武汉,430071 |
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| 基金项目： | 中国科技部社会公益研究专项(2004DIB3J131)，长江三峡工程开发总公司项目 |
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| 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。
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| 关 键 词： | 球面交切法 地震定位 S-P到时差 三峡水库 实效性 |
| 文章编号： | 1671-5942(2006)02-0099-05 |
| 修稿时间： | 2005年10月26 |
METHOD OF SPHERICAL SURFACE SHEARING IN EARTHQUAKE LOCATION |
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| Lian Chao,Li Shengle,Dong man,Cai Yongjian,Zhang Weihua.METHOD OF SPHERICAL SURFACE SHEARING IN EARTHQUAKE LOCATION[J].Journal of Geodesy and Geodynamics,2006,26(2):99-103. |
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| Authors: | Lian Chao Li Shengle Dong man Cai Yongjian Zhang Weihua |
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| Abstract: | 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. |
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| Keywords: | the method of spherical surface shearing earthquake location S-P arrival time difference Three Gorge reservoir effectiveness |
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