北京大学学报（自然科学版）2025，Vol.61Issue(5)：915-924,10.DOI:10.13209/j.0479-8023.2025.083
基于短周期地震观测的远震中频面波相速度提取
Extracting Teleseismic Mid-frequency Surface Wave Phase Velocity Based on Short-Period Seismic Observations
摘要
Abstract
The teleseismic surface wave two-station method was applied to an ultra-dense array of short-period seismometers in Jinzhong City,Shanxi Province.After the teleseismic records were filtered and corrected for instrument responses,mid-frequency(5-15 s)surface wave signals were extracted.High signal-to-noise ratio records were selected through screening.The Rayleigh wave phases were extracted from the Z component,and average dispersion curves for station pairs were obtained.The S-wave velocity structure was subsequently inverted.The results demonstrate that appropriate filtering and cross-instrument response correction enable the extraction of mid-frequency Rayleigh wave phase velocities from short-period seismometer recordings.Although the observation period is extremely limited,the inverted S-wave velocity structure aligns well with local fault tectonics.This confirms that mid-frequency seismic signals derived from short-period instruments are viable for subsurface inversion via teleseismic surface waves.关键词
短周期地震仪/远震面波/双台法/相速度Key words
short-period seismometer/teleseismic surface wave/two-station method/phase velocity引用本文复制引用
温景充,王敬香,赵志远,宁杰远,吕国军,韩晓飞..基于短周期地震观测的远震中频面波相速度提取[J].北京大学学报（自然科学版）,2025,61(5):915-924,10.基金项目
深地国家科技重大专项(2024ZD1001100)、河北省重点研发计划社会公共事业创新专项(22375406D)、河北省地震科技星火计划项目(DZ2021110500002)和山西省震灾风险防治中心委托项目"晋中市活断层探测深部地震构造环境分析"资助 （2024ZD1001100）
