[1]ZHONG Ju-fang,HU Xiao.Study on Attenuation Law of Evolutionary Power Spectra Parameter[J].Journal of Seismological Research,2009,32(02):162-168.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
32
Number of periods:
2009 02
Page number:
162-168
Column:
Public date:
2009-02-23
- Title:
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Study on Attenuation Law of Evolutionary Power Spectra Parameter
- Author(s):
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ZHONG Ju-fang1; 2; HU Xiao2
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(1.College of Civil Engineering,Nanchang Hangkong university,Nanchang,330063,Jiangxi,China)(2.China Institute of water Resources and Hydropower Research,beijing,100044,China)
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- Keywords:
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evolutionary power spectra; attenuation law; multifilter technique; experiential statistical method; parameter of ground shaking
- CLC:
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P315.9
- DOI:
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- Abstract:
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Based on the rock surface strong motion dataset in west America and Kameda's multifilter technique,the evolutionary power spectra of horizontal and vertical ground motion are calculated.The evolutionary power spectra parameters of every ground motion are achieved by the nonlinear least square method.The attenuation laws of the evolutionary power spectra parameters with earthquake magnitude,hypocentral distance and frequency are analyzed by experiential statistical method,and the attenuation models of the evolutionary power spectra parameters are developed.The coefficients of the attenuation models are also achieved by consistent weighted least square method for multi-random-variables.The rationality of these attenuation models are approved by compared with other's attenuation models.