摘要
在阐述地震动持时的含义及特征的基础上,分析研究了黄土地区与非黄土地区地震动衰减的差异,建立了甘肃省黄土地区地震动衰减规律,提出一种解决与给定超越概率水平相匹配的地震动持时的概率预测方法,给出了甘肃省黄土主要分布地区50年超越概率10%的地震动持时区划结果.
On the basis of illustrating the characteristics of the seismic duration, the differences in the attenuation of ground motion between loess areas and non-loess areas are analyzed and the regularity of the ground motion attenuation in Gansu province is also established. A probabilistic method of predicting ground motion duration corresponding to the setting level of exceedance probability is proposed, adn a probabilistic duration map compiled by the proposed method in main loess areas in Gansu province is provided with 10 percent of exceedance probability during a period of 50 years.
出处
《甘肃科学学报》
2005年第3期35-39,共5页
Journal of Gansu Sciences
基金
甘肃省自然科学基金资助项目(ZS991-A25-012-Z)
关键词
甘肃黄土地区
地震动持时
预测方法
地震危险性分析
loess land in Gansu province
seismic duration
prediction method
seismic risk assessment
