| THE PRECURSOR OF INSTABILITY FOR NONLINEAR SYSTEMS AND ITS APPLICATION TO EARTHQUAKE PREDICTION |
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| 引用本文： | 尹祥础,尹灿. THE PRECURSOR OF INSTABILITY FOR NONLINEAR SYSTEMS AND ITS APPLICATION TO EARTHQUAKE PREDICTION[J]. 中国科学B辑(英文版), 1991, 0(8) |
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| 作者姓名： | 尹祥础 尹灿 |
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| 作者单位： | Institute of Geophysics，State Seismological Bureau，Institute of Geophysics，State Seismological Bureau |
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| 基金项目： | This work is sponsored by the National Natural Science Foundation and the Joint Seismological Science Foundation of China. |
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| 摘 要： | By analysing the instability process of various nonlinear systems, we conclude that their instability precursors are the continual heightening of the response rate or response ratio.Applying this theory to earthquake prediction, we adopt the periodical change of the stress in crust caused by the tide-generating force as the loading and unloading. If we can measure the ratio of the response (such as crust deformation, gravity and seismicity) during the loading period to that during the unloading period, this parameter must contain some characteristic information about the seismogenic process.With nine earthquakes (M≥7) data that occurred in Chinese mainland during 1970-1988, we take the sum of square root o?energy of small earthquakes, which is called the released strain by Benioff, as the response to the tidal loading and unloading. We find that the response ratios of seven earthquakes increase obviously before the main earthquakes.
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THE PRECURSOR OF INSTABILITY FOR NONLINEAR SYSTEMS AND ITS APPLICATION TO EARTHQUAKE PREDICTION |
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| YIN XIANG-CHU AND YIN CAN. THE PRECURSOR OF INSTABILITY FOR NONLINEAR SYSTEMS AND ITS APPLICATION TO EARTHQUAKE PREDICTION[J]. Science in China(Chemistry), 1991, 0(8) |
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| Authors: | YIN XIANG-CHU AND YIN CAN |
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| Abstract: | |
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| Keywords: | nonlinear system instability loading and unloading response ratio tidal stress in crust earthquake prediction. |
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