地震地磁观测与研究2011，Vol.32Issue(6)：28-34,7.DOI:10.3969/j.issn.1003-3246.2011.06.006
德令哈地震台测震干扰频谱特征及背景分析
The frequency spectrum characteristics of seismological interference at Delingha Seismic Station and its background analysis
摘要
Abstract
Broadband seismometer is so sensitive that a slight variation of the environment for seismological observation can influence the quality of digital records. First, by contrasting the frequency spectrum characteristics of microseisms records among three stations, it is discovered that there was high-frequency interference at the band of 6. 5-7. 5 Hz on the digital records of Delingha Seismic Station. Based on the evolution pattern of spectrum range from 6. 5 to 7. 5 Hz, original background and sources were preliminarily analyzed, which may account for the decreases of P wave records in Delingha Seismic Station to certain degree.关键词
测震环境/高频干扰/频谱特征Key words
the environment for seismological observation, high-frequency interference, frequency spectrum characteristics引用本文复制引用
姚家骏,文勇,孟鑫,陈玉华,杨立明,赵燕杰,李瑞明..德令哈地震台测震干扰频谱特征及背景分析[J].地震地磁观测与研究,2011,32(6):28-34,7.基金项目
德令哈、大柴旦强震群序列综合研究(2009A01),德令哈地震台测震干扰背景的分析与评估(2010A04) （2009A01）
