为全面系统认识地磁秒采样观测数据的多种干扰因素,提升台站观测人员对干扰数据的辨别能力,提高数据预处理水平,基于河南省内5个地震地磁台站积累的数字化观测秒数据,总结地磁观测中存在的多种干扰及其曲线形态、变化特征和预处理方法。将台站存在的干扰分为交直流输电类、交通工具类、基建工程类、自然环境类、仪器因素类等5大类,分析了干扰的特征、预处理方法及存在的问题,以期为台站人员识别、处理同类型干扰提供有益借鉴,进而提高地磁观测数据的质量。
In order to comprehensively and systematically understand various interference factors in geomagnetic second sampling observation data, as well as to improve the recognition ability of station observers to interference data and the level of data preprocessing, this paper utilizes the digital observation second sampling data accumulated by five seismic geomagnetic stations in Henan Province. We summarize the various types of interferences in geomagnetic second sampling observation and analyze their morphological and variation characteristics, as well as provide data preprocessing methods. The interferences existing in the stations are divided into five categories:AC and DC transmission, vehicles, infrastructure engineering, natural environment and instrument factors. We thoroughly analyze the characteristics, preprocessing methods, and existing problems of each disturbance factor to provide useful references for station observers to identify and deal with the same type of interference, ultimately improving the quality of geomagnetic observation data.
2023,44(1): 58-66 收稿日期:2022-08-16
DOI:10.3969/j.issn.1003-3246.2023.01.008
基金项目:2022年度中国地震局监测、预报、科研三结合课题(项目编号:3JH-202201062);河南省地震局电磁数据异常提取创新团队项目
作者简介:黄恩贤(1989-),男,工程师,主要从事地震监测及数据分析工作。E-mail:583142254@qq.com
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