| Determination of combined effect of ampli- fication and attenuation of soft rock site us- ing digital seismic data |
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| 作者姓名： | 姜慧 高孟潭 俞言祥 赵翠萍 |
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| 作者单位： | Institute of Geophysics，China Earthquake Administration，Beijing 100081，China Earthquake Administration of Xinjiang Uygur Autonomous Region，ürümqi 830011，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Earthquake Administration of Xinjiang Uygur Autonomous Region，ürümqi 830011，China |
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| 基金项目： | The Special Funds for Major State Basic Research Project under Grant No，国家自然科学基金 |
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| 摘 要： | Introduction The so-called combined effect refers to the product (V( f )?P( f )) of the amplification factorand the high-frequency attenuation factor of sites (see Equation (1)). Whether the soft rock site orthe soil site, they have an amplification action on the ground motion of a certain frequency, andsimultaneously have an attenuation action on the motion of high frequency because they are softerthan the hard rock under them. The combined effect of soft rock is the very contents that …
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Determination of combined effect of amplification and attenuation of soft rock site using digital seismic data |
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| Abstract: | In the paper, for thc application of stochastic simulation of ground motion, we put forward a method to determine"the combined effect of amplification and attenuation" (combined effect for short) of soft rock site by using digitalseismic data of moderate and small earthquakes. Our approach aims at solving the problem of the combined effectof soft rock site, which is difficult to determine in most regions of China because fewer measures were done forS-wave velocity structure. Thc combined effect of soft rock site can be determined by using the approach recommended by us. An example is given to discuss the practical application of the method. |
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| Keywords: | digital seismic data soft rock combined effect |
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