| 负位错模型与断层运动图象──确定滇西地震预报实验区的潜在震源区 |
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| 引用本文： | 高锡铭,伍吉仓.负位错模型与断层运动图象──确定滇西地震预报实验区的潜在震源区[J].大地测量与地球动力学,1994(4). |
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| 作者姓名： | 高锡铭 伍吉仓 |
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| 作者单位： | 国家地震局地震研究所 |
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| 摘 要： | 为了确定断层的滑移区和闭锁区，我们采用闭锁区存在一个负位错和断层两侧的地块相对运动相叠加的模型来模拟断层运动图象，并使用多期大地测量资料反演确定断层的闭锁区。本文采用滇西地震预报实验区的两期大地测量资料和部分跨断层形变观测资料，反演确定了该地区四条主要活动断层的运动图象，从而判断大理、祥云一带为断层的闭锁区，并以此作为确定潜在震源区的标志。
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| 关 键 词： | 负位错，断层，闭锁区，反演 |
NEGATIVE DISLOCATION MODEL AND FAULT MOVEMENTPATTERN:DETERMINATION OF POTENTIAL RIGION IN THE STUDY AREA OF EARTHQUAKE PREDICTION,WEST YUNNAN |
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| Gao Xinming and Wu Jicang.NEGATIVE DISLOCATION MODEL AND FAULT MOVEMENTPATTERN:DETERMINATION OF POTENTIAL RIGION IN THE STUDY AREA OF EARTHQUAKE PREDICTION,WEST YUNNAN[J].Journal of Geodesy and Geodynamics,1994(4). |
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| Authors: | Gao Xinming and Wu Jicang |
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| Abstract: | For determination of slipping and locking parts of faults we use such a model to simulate the move.ment pattern that the negative dislocation is in the locking part and superimposed with relative motion of both sides of the fault.In addition the locking part of fault is inversely determined with multiperiodical geodesy data.For example,the movement pattern of 4 principal active faults in the study area of earthquake prediction,west Yunnan was inversely determined by use of 2 terms of geodesy data and some deformation data across the faults.Thus the region around Dali and Xiangyun are discriminated as the locking part and this kind of movement pattern can be taken as a mark for determining potential source region. |
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| Keywords: | negative dislocation fault locking part inversion |
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