| 海原、道孚地震前后的区域性倾斜变化特征 |
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| 引用本文： | 张伯宏,刘天铭.海原、道孚地震前后的区域性倾斜变化特征[J].大地测量与地球动力学,1996(2). |
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| 作者姓名： | 张伯宏 刘天铭 |
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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： | 采用富里叶分析法，对宁夏海原５．７级地震和四川道孚６．９级地震的震区垂直形变场的区域性倾斜信息进行分离和提取。上述地震在孕震期和震后，其区域性倾斜的倾向一致；而发震期的区域性倾斜不同于孕震期和震后，其倾向有一定偏转。
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| 关 键 词： | 地倾斜，垂直形变，富里叶分析，地震过程 |
STUDY ON THE VARIATION CHARACTERISTIC OF REGIONAL TILT OF MIDDLE AND STRONG EARTHQUAKES |
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| Zhang Bohong and Liu Tianming.STUDY ON THE VARIATION CHARACTERISTIC OF REGIONAL TILT OF MIDDLE AND STRONG EARTHQUAKES[J].Journal of Geodesy and Geodynamics,1996(2). |
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| Authors: | Zhang Bohong and Liu Tianming |
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| Abstract: | Using the Fourier analysis the information of regional tilt which are relatedl to Haiyuan and Daofu earthquekes(M5.7 and 6.9 respectively).is separated and extracted from vertical deformation of near field in seismic area. It Is shown that the directions of the vertical deformation fields in these seismic areas during seismogenic stage,agree with those after events.But the direction in the time when earthquake occured are different from those above mentioned.And all of the directions agree with outside force on the crust of the China continent. |
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| Keywords: | ground tilt vertical deformation Fourier analysis seismic process |
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