地震地磁观测与研究Issue(1)：104-108,5.DOI:10.3969/j.issn.1003-3246.2014.01/02.020
首都圈数字电磁波变化特征
摘要
Abstract
The spectrum characteristics of electromagnetic diurnal variation have been identified by maximum entropy method,based on electromagnetic data from eleven stations at Chinese metropolitan area,including Hongshan,Changli and Huailai,etc.This study shows that,the amplitude of the 12 h and 24-25 h semidiurnal wave is larger than others.The disturbance sources of electromagnetic date include geo-resistivity power supply and subway interference. The interference pattern caused by supplying periods of earth resistivity is electromagnetic disturbance far more than the background about 5 min,and that caused by subway is positive pulse change at the running time.关键词
数字电磁波/最大熵谱/日变/干扰Key words
electromagnetic data/maximum entropy method/diurnal variation/disturbance sources引用本文复制引用
张国苓,乔子云,贾立峰,张建国,王艳荣..首都圈数字电磁波变化特征[J].地震地磁观测与研究,2014,(1):104-108,5.基金项目
由国家自然科学基金（41274079）和中国地震局青年震情跟踪工作任务（2013020408）资助 （）
