| 永胜台定点形变与丽江7.0级地震 |
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| 引用本文： | 刘仲全.永胜台定点形变与丽江7.0级地震[J].地震研究,1997,20(3):273-277. |
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| 作者姓名： | 刘仲全 |
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| 作者单位： | 云南省地震局 |
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| 摘 要： | 丽江７．０级地震前，永胜台定点形变出现前所未有的巨大变化，东西向的变化较南北向的变化更显。展示了在源区附近７级大震前定点形变突出变化的一个典型震例。此震例对于今后研究观测点附近大震前的异常特征有重要的参考意义。
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| 关 键 词： | 异常现象 定点变形 地震 震级 地震前兆 |
ESTABLISHMENT OF ATTENUATION LAW OF ACCELERATION PEAK VALUE BY USING NEURAL NETWORK |
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| Cui Jianwen,Fan Yaoxin.ESTABLISHMENT OF ATTENUATION LAW OF ACCELERATION PEAK VALUE BY USING NEURAL NETWORK[J].Journal of Seismological Research,1997,20(3):273-277. |
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| Authors: | Cui Jianwen Fan Yaoxin |
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| Abstract: | This paper,after supporsing the form of attenuation law of acceleration peak value,uses pratical observation data of acceleration peak value fitted by artificaial neural network to obtain the coefficient undetermined in equation.In order to accelerate training of neural network,the network training method with division of objective stage in view of back propagation learning algorithm is designed in the paper.On the basis of the observation data of horizontal acceleration peak value for the Lancang-Genma strong earthquake and in combination with some strong earthquake data in west America, the attenuation law of horizontal acceleration peak value with the characteristics of mountain areas in Yunnan is fitted and established using the artificial neural network. |
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| Keywords: | Nonlinear theory earthquake acceleration fitting |
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