| 利用区域水准测量资料判定地震危险区 |
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| 引用本文： | 刘天铭,张伯宏.利用区域水准测量资料判定地震危险区[J].大地测量与地球动力学,1997(1). |
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| 作者姓名： | 刘天铭 张伯宏 |
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| 作者单位： | 国家地震局第二地形变监测中心 |
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| 摘 要： | 利用中国西部地区２０多年的水准测量资料，用富氏分析法分离地壳垂直形变信息，进而计算了测区的垂直形变场分数维，并分析了它在孕震过程中的变化特征。结果表明，区域垂直形变场分数维在地震前下降，同震时段降至最低。在此基础上，提出了划分地震危险区的判据，并结合实例介绍了计算方法和步骤
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| 关 键 词： | 垂直形变 分数维 地震危险区 |
PRELIMINARY STUDY TO DECIDE THE SEISMIC RISK REGION USING LEVELING DATA |
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| Liu Tianming and Zhang Bohong.PRELIMINARY STUDY TO DECIDE THE SEISMIC RISK REGION USING LEVELING DATA[J].Journal of Geodesy and Geodynamics,1997(1). |
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| Authors: | Liu Tianming and Zhang Bohong |
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| Abstract: | Based on the data of the leveling in Western China for twenty years, the information of vertical crust deformation is separated by use of the Furier-analysis method. Accordingly, the fractal of the vertical deformation in the area is calculated and its varying feature in the seismogenic process is analyzed. The results show that the fractal reduces before an earthquake and is minimum during earthquake, according to which the criterion of dividing seismic risk is put forward. Finally, the computational method and qteps are described with some examples. |
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| Keywords: | vertical deformation fractal seismic risk region |
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