基于HVSR法的震源深度引起放大效应的研究——以关东盆地为例  

Study on Amplifying Effect Caused by Focal Depth Based on HVSR Method:A Case Study of Kanto Basin

作　　者：刘贝贝 LIU Beibei(Jiangsu Key Laboratory of Structural Engineering,Suzhou University of Science and Technology,Suzhou Jiangsu 215009 China)

机构地区：[1]苏州科技大学,江苏省结构工程重点实验室,江苏苏州215009

出　　处：《江苏建筑》2024年第4期26-28,共3页Jiangsu Construction

摘　　要：盆地对地震动具有很强的放大作用。文章基于日本关东盆地及其周围20个台站的记录,研究了S波窗口、S波后10秒窗口、尾波窗口之间特征的差异,从理论上解释了这些差异,并研究了三者随震源深度化产生的放大差异。结果表明:尾波窗口、S波后10秒窗口与S波窗口采用HVSR法得到曲线形状相似。浅源地震引起的S波窗口、S波后10秒窗口与尾波窗口放大显著高于深源地震。The basin has a significant amplifying effect on ground motion.Based on the records from 20 stations around the Kanto Basin in Japan,this paper studies the differences in characteristics among the Swave window,the 10-second post S-wave window,and the coda wave window,and provides a theoretical explanation for these differences.Additionally,the study investigates the amplification differences caused by the variation in focal depth among these three wave windows.The results indicate that the shapes of the curves obtained by using the HVSR method for the coda wave window,the 10-second post S-wave window,and the S-wave window are similar.The amplification of the S-wave window,the 10-second post S-wave window,and the coda wave window induced by shallow earthquakes are significantly higher than those induced by deep earthquakes.

关 键 词：关东盆地 S波 尾波 震源深度 

分 类 号：TU435[建筑科学—岩土工程]