青海数字测震台网台站地动噪声分析  

ANALYSIS ON GROUND MOTION NOISE OF QINGHAI DIGITAL SEISMOGRAPH NETWORK

作　　者：万玉杰[1] 马丽[1] 李振凯 WAN Yujie;MA Li;LI Zhenkai(Qinghai Earthquake Agency,Xining 810001,China)

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2022年第1期41-49,共9页Plateau Earthquake Research

基　　金：青海省地震科学基金“青海地震台网台站地动噪声分析”(项目编号:2021B03)资助。

摘　　要：介绍了青海省数字测震台网布局建设和数字测震台站仪器的配置,通过对2012年1月~2021年10月青海省的38个数字测震台站地动噪声功率谱密度计算,得出10年来各测震台站地动噪声水平RMS值在逐年增长,并按噪声计算结果对台站进行了分类,找出噪声水平变化大的台站,给出功率谱密度曲线图,指出了影响台站背景噪声的因素除了仪器本身的性能外,主要与台基条件和台址环境有关,针对性地对部分台站观测环境的改造提供了建议。This paper introduces the digital ride networks layout construction and ride stations in Qinghai province instrument configuration,through from January 2012 to October 2021 in Qinghai province of 38 digital ride station ground shaking noise power spectral density calculation.It is concluded that the ride in ten years set noise level stations in the RMS values increased year by year.The results according to the noise of stations are classified.It is pointed out that the factors affecting the background noise of the station are mainly related to the base condition and the site environment,besides the performance of the instrument itself.Some suggestions are given for the modification of the observation environment of some stations.

关 键 词：数字测震 地动噪声 功率谱 RMS值 

分 类 号：P315.75[天文地球—地震学]