Attenuation relationship for estimation of peak ground horizontal acceleration using data from strong-motion arrays in India
Attenuation relationship for estimation of peak ground horizontal acceleration using data from strong-motion arrays in India
复制标题
使用印度强运动阵列数据估算峰值地面水平加速度的衰减关系
DOI：
10.1785/bssa0880041063
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发表时间：
1998
影响因子：
3
通讯作者：
M. Sharma
中科院分区：
文献类型：
--
作者：
M. Sharma
建立了印度喜马拉雅地区水平地震加速度峰值的衰减关系。该数据库由印度强震台阵记录的5次地震的66个峰值地面水平加速度组成。本分析采用两步分层回归模型。建议的衰减关系为
log（A）= − 1.072 + 0.3903 M − 1.21 log（X + e 0.5873 M），
其中A是峰值地面加速度（g），M是震级，X是距震源的震源距离。残差平方和为0.14。并与其它衰减关系进行了比较。与其他关系相比，建议的关系在较短的距离上给出较小的值，需要进一步研究更大的数据集。当将来获得更多的数据时，衰减关系需要修正。
An attenuation relationship for peak horizontal ground accelerations for Himalayan region in India has been developed. The data base consists of 66 peak ground horizontal accelerations from five earthquakes recorded by strong-motion arrays in India. The present analysis uses a two-step stratified regression model. The attenuation relationship proposed is
log ( A ) = − 1.072 + 0.3903 M − 1.21 log ( X + e 0.5873 M ) ,
where A is the peak ground acceleration (g), M is the magnitude, and X is the hypocentral distance from the source. The residual sum of squares is 0.14. Comparison with other such attenuation relationships have been made. The proposed relationship giving lesser values at shorter distances compared to other relationships needs further investigation with a larger data set. The attenuation relationship needs upgradation when more data become available in future.