成都地铁运行对成都台电磁观测的影响  

Electromagnetic observation environment changes caused by the operation of the Chengdu subway system

作　　者：钟李彬[1] 吕茜[1] 董立杰[1] 

机构地区：[1]成都地震基准台四川省地震局,四川成都611730

出　　处：《四川地震》2015年第1期29-32,共4页Earthquake Research in Sichuan

摘　　要：成都地铁2号线建成后随即运营,由于成都地震台距离地铁线路的垂直距离约为25 km,了解地铁运行产生的电磁场对成都台电磁观测可能造成的影响或干扰是有意义的。根据地铁运行时间和地磁地电观测数据的对比,分析了电磁观测数据受地铁干扰的情况,从观测数据时间序列上分析地磁干扰,发现观测数据的变化与地铁交通每天的运营时间存在明显的对应关系,且对于布极方位与轨道方向一致的测道,所记录的数据受到地铁的影响最大。这些结果有助于对地磁观测资料的认识和分析,以便提取与地震有关的地磁前兆信息。After the Chengdu metro line 2 is completed,the Chengdu metro began its operation. The distance from Chengdu Seismic Standard Station to the subway line is about 25 km. The subway system operation affects the electromagnetic observation environment of Chengdu Seismic Standard Station. In this paper,according to the metro operation schedule,we think that the electromagnetic observation data,especially the electromagnetic observation line paralleled with the subway line,are affected by the electromagnetic disturbance caused by the Chengdu Subway system. The analysis will contribute to our understanding of the observation data in order to extract the information related to earthquake precursor.

关 键 词：地铁干扰 特征分析 影响 

分 类 号：P318.62[天文地球—固体地球物理学]