| MT剖面透视新方法与托来6．0级地震 |
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| 引用本文： | 张云琳,刘伟,安海静,陈运平,李志雄,刘晓玲.MT剖面透视新方法与托来6．0级地震[J].中国地震,2001,17(1):82-91. |
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| 作者姓名： | 张云琳 刘伟 安海静 陈运平 李志雄 刘晓玲 |
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| 作者单位： | 1. 海南省地震局,
2. 兰州地震研究所, |
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| 基金项目： | 本项研究得到地震基金重点课题“95-07-431”资助. |
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| 摘 要： | 在近10余年观测研究的基础上，采用高精度MMSO2E系统，在青藏高原北缘祁连山地震危险区，建立了国内外第一个初具规模的MT透视剖面，研究区不仅电磁干扰背景较弱，而且地震活动性较强，自1986年以来，我们已经获得了11次5－7级地震前后的宝贵资料，在研究这些资料的基础上，提出了一些有意义的认识和结论，对观测资料进行了全定量化的误差分析，评估了MT响应参数和复合二元相关度和可信限，论述了MT剖面透视资料的可靠性和可信性，对介质导电性和电性横向非均匀性动态变化的原因进行了讨论，研究表明，MT剖面透社为大陆坡坏地性地震的中短期预测及震源物理发展过程提供了定量化的多参数指标体系。
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| 关 键 词： | MT剖面透视 视电阻率 扭曲度 主轴方位角 托来地震 地震活动性 |
Tuolai Ms 6.0 Earthquake and MT Proffie Measurement |
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| Zhang Yunlin,Liu Wei,An Haijing,Chen Yunpin,Li Zhixiong,Liu Xiaolin.Tuolai Ms 6.0 Earthquake and MT Proffie Measurement[J].Earthquake Research in China,2001,17(1):82-91. |
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| Authors: | Zhang Yunlin Liu Wei An Haijing Chen Yunpin Li Zhixiong Liu Xiaolin |
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| Institution: | Zhang Yunlin 1) Liu Wei 1) An Haijing 2) Chen Yunpin 1) Li Zhixiong 1) Liu Xiaolin 1) 1) |
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| Abstract: | Based on the ten years'observation with high precise system of MMS 02E, the first MT profile measurement has been practiced in the dangerous area of earthquake in Qilianshan Mountain on the Qinghai Xizang plateau. The environment of the area has less electronic and magnetic perturbation, and has higher seismicity. Since 1966, the data of 11 earthquakes with greater than magnitude 5 7 has been obtained, from that some significant understanding and results have been proposed. The errors of the data have been calculated, the two dimensional co correlation degree of MT response factors and interval of believing degree have been estimated. The reliability and believing degree of the data from the profile measurement have been discussed and the reasons for the change of both property of conducting electricity of medium and horizontal heteropic property of medium. The study results pointed out MT profile measurement was a useful for medium and short\|term earthquake prediction and earthquake source development monitoring. And the method also could provide a quantitative and multi factor judgement standard. |
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| Keywords: | MT profile measurement Apparent resistivity Twisting degree Azimuth of main axis |
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