| 用停止相研究震源的破裂过程 |
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| 引用本文： | 韦士忠,张相民.用停止相研究震源的破裂过程[J].地震地磁观测与研究,1993,14(2):20-29. |
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| 作者姓名： | 韦士忠 张相民 |
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| 作者单位： | 国家地震局地球物理研究所，国家地震局地球物理研究所，国家地震局地球物理研究所 |
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| 摘 要： | 利用国内基准台的 SK 地震记录图上的停止相研究了1989年4月16日,4月25日和5月3日巴塘3次中强地震(M_s=6.5,6.5和6.3)的震源详细破裂过程。研究结果表明:巴塘3次中强地震均为不对称双侧破裂机制,断层面走向均为 NNE,震源体破裂错动总长分别为23.9,21.3和27.1km,断层面宽度分别为7.1,6.1和6.4km,破裂错动的倾角较小,因此震源体的破裂错动以水平运动为主。
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| 关 键 词： | 停止相 断层面宽度 到时差 震源 |
Study of focal rupture process by using stopping phases |
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| Wei Shizhong Zhang Xlangmin Li Yuping.Study of focal rupture process by using stopping phases[J].Seismological and Geomagnetic Observation and Research,1993,14(2):20-29. |
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| Authors: | Wei Shizhong Zhang Xlangmin Li Yuping |
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| Abstract: | By using stopping phases of SK seismograms of standard stations on the Chinese main-land,we studied focal rupture processes of three moderately strong earthquakes(M_s=6.5,6.5 and 6.3)which occurred on April 16,April 25 and May 3,1989,arond Batang inSichuan province,respectively.The results show that focal rupture processes of thress earthquakes were bilateraland asymmetrical on the fault plane with NNE direction.THe rupture lengths of sourceswere 23.9km,21.3 and 27.1km,and the widths of fault planes were 7.1km,6.1km and6.4km,respectively.THese earthquakes were strike-slip faulting events with low dip angleand the rupture velocities were about 1.2 to 4.6 km/s. |
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| Keywords: | Kdy words:focal rrupture process stopping phases widths of fault planes rupture lengths arrival time differnce |
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