2016年以来石柱地震台地磁观测数据明显受到环境干扰,与相邻地震台日均值数据进行相关性分析,确定在干扰时段内,地磁观测数据主要受台站环境改造及周边建筑施工影响。据干扰产生原理将干扰源分为铁磁性和电磁性干扰,分析干扰时段内地磁观测数据曲线典型特征,为今后地磁台站选址及干扰判别积累经验。
The geomagnetic observation data at Shizhu Seismic Station are obviously affected by environmental impacts since 2016. Correlation analysis of the daily average data with an adjacent seismic station reveals that, in the interference period, the magnetic observation data were disturbed by the construction of surrounding buildings and reconstruction at the seismic station. The interference sources can be divided into ferromagnetic interference and electromagnetic interference according to the jamming principle. Analysis of the typical characteristics of the geomagnetic observation data curve during the interference period will accumulate experience for site selection and interference discrimination in the future.
2020,41(2): 138-145 收稿日期:2019-09-10
DOI:10.3969/j.issn.1003-3246.2020.02.016
基金项目:重庆市地震局2019年科研课题
作者简介:杨亚运(1990-),男,本科学历,工程师,主要从事地震监测与运行维护工作。E-mail:yang_ya_yun_6666@126.com
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