利用安徽省部分强震动台站记录的地脉动数据和历史地震数据,采用H/V谱比法和噪声功率谱密度函数法,对比分析台站的场地响应及背景噪声,结果表明:全椒、马鞍山地震台的场地卓越周期小且背景噪声低;沈巷地震台卓越周期大且背景噪声高;三山地震台无明显卓越周期;地震台站背景噪声与场地响应曲线之间不存在一一对应关系。
Based on the earth pulsation and the seismic data recorded by some China strong motion stations in Anhui Province, the site responses and the background noise levels are obtained by the H/V spectral method and noise power spectral density function calculation, respectively. The comparison of site response and background noise level shows that Quanjiao and Maanshan Seismic Stations have the small predominant period and the low background noise level; Shenxiang Seismic Station has the large predominant period and the high background noise level; Sanshan Seismic Station has no obvious predominant period; There is no one-to-one correspondence between the background noise and the site response.
2018,39(1): 89-95 收稿日期:2017-02-09
DOI:10.3969/j.issn.1003-3246.2018.01.015
基金项目:2017年中国地震局三结合项目(项目编号:CEA-JC/3JH-161205);2016年度地震科技星火计划青年项目(项目编号:XH16017Y)
作者简介:龙剑锋(1987-),男,硕士研究生,湖北省恩施自治州人,工程师,主要从事测震、强震台站维护与维修工作。E-mail:Longjianfeng87@yeah.net
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