华南地震2026，Vol.46Issue(2)：29-35,7.DOI:10.13512/j.hndz.2026.02.04
基于噪声HVSR方法的粤港澳大湾区VS30估算研究
VS30 Estimation in the Guangdong-Hong Kong-Macau Greater Bay Area Based on the Noise HVSR Method
摘要
Abstract
Many seismic codes worldwide adopt the equivalent shear wave velocity(VS30)in the top 30 m of the ground as a key parameter.However,due to the lack of adequate site boring data in the Guangdong-Hong Kong-Macao Greater Bay Area,the resolution and accuracy of the VS30 are relatively low.To address this issue,this pa-per employs the Horizontal-to-Vertical Spectral Ratio(HVSR)method based on single-station records to measure VS30.By utilizing ground motion observation records from over 6200 points with an average distance of about 750 m between stations,high-resolution VS30 distribution results for the Greater Bay Area were obtained by using the HVSR method.The results align well with the surface topography,showing that most areas have VS30 values below 360 m/s,with the lowest values found in the Pearl River Delta plain.In contrast,higher VS30 values(>360 m/s)are predominantly distributed in mountainous regions,such as Maofeng Mountain,Baiyun Mountain,Panyu Ta-bleland,and Daling Mountain.This study provides important scientific foundational data for urban planning and seismic fortification in the Guangdong-Hong Kong-Macao Greater Bay Area.Overall,the HVSR technique serves as an effective method for estimating VS30,making it suitable for areas lacking detailed site boring data.This can provide valuable information for earthquake engineering and risk assessment.关键词
粤港澳大湾区/VS30/HVSR/密集台阵/场地放大效应Key words
Guangdong-Hong Kong-Macao Greater Bay Area/VS30/HVSR/Dense array/Site amplification ef-fect分类
天文与地球科学引用本文复制引用
熊成,叶秀薇,王力伟,张严心,曾晓燕..基于噪声HVSR方法的粤港澳大湾区VS30估算研究[J].华南地震,2026,46(2):29-35,7.基金项目
广东省科技计划项目(2023A1111120028) （2023A1111120028）
地震科技星火计划青年项目(XH24031YA)联合资助. （XH24031YA）
