摘要
本文从观测环境、观测系统和人为干扰等方面对都兰地震台地磁FHD-2B自2015年1月以来的观测数据进行了分析,结果表明观测仪器工作参数偏离、数采内部线路松动、交流电磁、信号线长度及人为干扰是影响都兰台地磁观测资料质量的主要因素。通过典型畸变形态进行对比、分析和总结,可更好地分辨干扰,进行合理、准确地预处理,进一步提高地磁数据观测质量。
In this paper,the observation data of geomagnetic FHD-2B from the aspects of environment,observation system and human interference are analyzed.The result shows that the main factors affecting the quality of geomagnetic observation data are the deviation of the operating parameters of the observation instrument,the looseness of the internal circuit of data collection,alternating-current electromagnetic,the length of signal line and the human interference.Through the comparison,analysis and summary of the typical distortion forms of the recorded curve,the interference can be distinguished better.The pretreatment can be carried out reasonably and accurately.Then,the observation quality of geomagnetic data can be further improved.
作者
卢嘉沁
赵玉红
LU Jiaqin;ZHAO Yuhong(Qinghai Earthquake Agency, Xining 810001, China)
出处
《高原地震》
2020年第1期52-57,共6页
Plateau Earthquake Research
基金
青海省地震局基金课题(2018B11)资助。
