香港地区地震危险性分析  

THE SEISMIC RISK ANALYSIS IN HONG KONG REGION

作　　者：丁原章[1,2,3] 李焯芬[1,2,3] 潘伟强 

机构地区：[1]广东省地震局 [2]香港大学 [3]香港土木工程署

出　　处：《华南地震》1998年第1期91-98,共8页South China Journal of Seismology

摘　　要：在前人研究的基础上，对香港地区的潜在震源区及有关地震活动性参数作了研究和调整。对不同学者给出的衰减关系作了对比和分析，并将计算结果与近年不同学者在邻近地区的工作成果作了比较，最后进行了不确定性分析。结果表明，香港地区５０年超越概率１０％的基岩水平加速度峰值（ＰＧＡ）界于７５ｇａｌ和１１５ｇａｌ之间，九龙场点为９２７ｇａｌ，本区各场点的地震基本烈度为Ⅶ度。Based on the results of previous investigations, the present study evaluates and reassesses the potential source zones for the Hong Kong region and the related seismic ground motion parameters. The attenuation relations proposed by various investigations are compared and analyzed. The computation results thus obtained in the present study are compared to those of others for adjacent regions. Uncertainty analysis were then conducted. The main conclusion of the present study is that the peak ground acceleration on bedrock is in the range 75～115 gal for the Hong Kong region, corresponding to a probability of exceedance of 10% over a return period of 50 years. For Jiulon site, this value is in the order of 92 7 gal. The seismic intensity of the region is rated as Ⅶ.

关 键 词：地震危险性分析 潜在震源区 超越概率评估 香港 

分 类 号：P315.9[天文地球—地震学]