云南场区宽频带地震监测台站勘选方法探讨——以文山和曲靖地区为例  

Discussion on Location Selection of Broadband Seismic Monitoring Stations in Yunnan Field of China Earthquake Science Experimental Field Construction Project−Taking Wenshan and Qujing Areas as Example

作　　者：毕树伟 张光顺 高洋[1] 台梓含 黎朕灵 邓存华[1] 李圣 字承柱 Bi Shuwei;Zhang Guangshun;Gao Yang;Tai Zihan;Li Zhenling;Deng Cunhua;Li Sheng;Zi Chengzhu(Yunnan Earthquake Agency,Kunming 650224,China)

机构地区：[1]云南省地震局,昆明650224

出　　处：《震灾防御技术》2024年第2期410-420,共11页Technology for Earthquake Disaster Prevention

基　　金：中国地震科学实验场国家重大科技基础设施项目(2022-000052-74-01-000068)。

摘　　要：地震监测台站勘选的合理性是决定地震观测数据质量、台站功能及稳定运行的重要因素。本文依据中国地震科学实验场建设工程项目云南场区宽频带地震监测意向台站的勘选要求,对云南文山、曲靖地区24个意向台站进行实地勘选,梳理总结了宽频带地震监测意向台站勘选的重要环节,可划分为室内资料收集、台址图勘、野外踏勘确定意向台址、场地协商及租地意向书签订、室内勘选资料整理5个阶段,其中台址图勘对野外踏勘确定意向台址起到了非常重要的作用,大大提高了意向台站勘选的工作效率。以CD151意向台站勘选为例,详细论述了5个阶段的工作方法;同时以4个意向台站噪声水平测试分析验证勘选方法的可行性,勘选的意向台站均符合Ⅰ级台基背景噪声水平,满足按照Ⅲ级地噪声台站勘选的观测环境技术要求,本研究对宽频带地震监测台站勘选工作具有一定参考价值和借鉴意义。The selection of seismic monitoring stations is crucial for ensuring high-quality seismic observation data,functional integrity,and stable operation of the stations.This process demands advanced technology,substantial experience,and lacks specific working methodologies.In response to the requirements of the China Earthquake Science Experimental Field Construction Project in Yunnan province,focused on broadband seismic monitoring,a survey and selection of 24 intention stations in Wenshan and Qujing areas of Yunnan province was conducted.This paper outlines the key stages involved in the survey and selection of intention stations for broadband seismic monitoring,organized into five stages:indoor data collection,station site mapping,field survey to determine the intention station site,negotiations and signing of land lease agreements,and indoor data sorting and selection.Site mapping plays a pivotal role in the field survey and determination of intention station sites,significantly enhancing survey efficiency.Using the survey and selection of the CD151 intention station as an example,this paper discusses in detail the methodologies employed across these five stages.The feas-ibility of this approach is validated through noise level tests and analysis conducted at four intention stations.These selected stations exhibit noise levels consistent with Grade I station standards,meeting the technical requirements for observation environments based on Grade III station ground noise surveys.This study provides valuable reference and practical insights for the selection of broadband seismic monitoring stations,emphasizing the importance of systematic survey methodologies to ensure effective station deployment and operational success.

关 键 词：中国地震科学实验场 宽频带地震监测 意向台站勘选 工作方法 台址图勘 

分 类 号：P315.78[天文地球—地震学]