摘要
利用成都地震监测中心站及其下属台站的地磁观测数据,分类统计了八套GM4仪器出现的各类干扰,并对干扰数据的预处理办法进行了研究。这些台站目前存在的地磁干扰主要有空间电磁影响、直流高压输电、地电阻率、地铁轻轨、电源故障、仪器故障、雷击、人为、车辆和基建工程干扰。通过利用预处理方法,可以剔除观测数据中特定的干扰信息,从而提高数据质量,为震情跟踪分析和地震预报提供可靠的基础资料。
Based on the geomagnetic observation data of Chengdu earthquake station and its subordinate stations,all kinds of interferences in eight GM4 instruments are counted and preprocessed the interference datas.The geomagnetic interference existing at these stations mainly includes vehicle,HVDC transmission,lightning,man-made,instrument failure,power failure and infrastructure projects interference.By using the pretreatment method,the specific interference information in observation data can be eliminated.
作者
廖绍欢
李雪浩
魏嘉曦
LIAO Shaohuan;LI Xuehao;WEI Jiaxi(Chengdu Earthquake Monitoring Center Station of Sichuan Earthquake Agency,Sichuan Chenglu 611730;Jiangyou Seismic Station,Sichuan Jiangyou 621724)
出处
《四川地震》
2021年第2期36-41,共6页
Earthquake Research in Sichuan
基金
四川省地震局科技专项(LY1912)。
关键词
地磁观测
干扰分类统计
数据预处理
geomagnetic observation
interference classification statistics
data preprocessing
