青藏高原测震监测站点勘选  

Survey and selection of seismic monitoring sites in Qinghai-Xizang Plateau

作　　者：白玛桑布 普穷 单增曲珠 洛桑罗布 白玛德吉 旦增欧珠 Baimasangbu;Puqiong;Danzengquzhu;Luosangluobu;Baimadeji;Danzengouzhu(Earthquake Agency of Xizang Autonomous Region,Lhasa 850000,China)

机构地区：[1]西藏自治区地震局,拉萨850000

出　　处：《地震地磁观测与研究》2024年第3期76-81,共6页Seismological and Geomagnetic Observation and Research

摘　　要：基于青藏高原地震监测能力提升项目中测震站点勘选过程所得观测数据,以位于藏西北的阿索站、娘热站、达若站、昂仁站、如萨站和察布站观测数据为例,计算6个勘选台站台基地脉动背景噪声RMS值、噪声功率谱密度等,评估各站点环境噪声水平和台基等级。分析发现,5个台址台基噪声水平达到Ⅰ类,1个台址达到Ⅱ类台基噪声水平。此次西藏自治区地震局新建监测站点野外踏勘工作完成水平较高,可为台站正式建设提供数据支持。Based on the observation data obtained during the survey and selection process of seismic stations in the Qinghai-Xizang Plateau Earthquake Monitoring Capability Improvement project,the RMS value and noise power spectral density of 6 selected stations in northwest Tibet were calculated,and the ambient noise level and base grade of each station were evaluated.The research show that the noise level of 5 sites reaches Class I standard and 1 site reaches Class II.The field survey work of the newly built monitoring station of the Earthquake Agency of Xizang Autonomous Region has been completed at a high level,which can provide data support for the formal construction.

关 键 词：测震站点堪选 噪声功率谱密度 台基噪声水平 观测数据 

分 类 号：P315.7[天文地球—地震学]