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| 德令哈地震台测震干扰频谱特征及背景分析 | |
| 引用本文： | 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. |
| 作者姓名： | 姚家骏 文勇 孟鑫 陈玉华 杨立明 赵燕杰 李瑞明 |
| 作者单位： | 1. 中国西宁810001 青海省地震局 2. 中国青海817000 德令哈地震台 3. 中国甘肃730000 中国地震局兰州地震研究所 |
| 基金项目： | 德令哈、大柴旦强震群序列综合研究，德令哈地震台测震干扰背景的分析与评估 |
| 摘 要： | 通过3个台站地脉动频谱特征的对比,发现德令哈地震台地脉动记录6.5-7.5 Hz频段存在明显的高频干扰.根据2008年1月至2010年10月以来该高频干扰的频谱演化规律,对其产生背景来源做初步分析,在一定程度上解释了德令哈地震台P波记录个数减少的原因. |
| 关 键 词： | 测震环境 高频干扰 频谱特征 |
The frequency spectrum characteristics of seismological interference at Delingha Seismic Station and its background analysis |
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| Yao Jiajun,Wen Yong,Meng Xin,Chen Yuhua,Yang Liming,Zhao Yanjie,Li Ruiming.The frequency spectrum characteristics of seismological interference at Delingha Seismic Station and its background analysis[J].Seismological and Geomagnetic Observation and Research,2011,32(6):28-34. | |
| Authors: | Yao Jiajun Wen Yong Meng Xin Chen Yuhua Yang Liming Zhao Yanjie Li Ruiming |
| Institution: | 1) Earthquake Administration of Qinghai Province, Xining 810001, China 2) Delingha Seismic Station, Qinghai Province 817000, China3) Lanzhou Seismological Institute, China Earthquake Administration, Gansu Province 730000, China |
| 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. |
| Keywords: | the environment for seismological observation high-frequency interference fre quency spectrum characteristics |
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