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重庆三峡测震台网子台站地噪声及监测能力分析

重庆三峡测震台网子台站地噪声及监测能力分析

ANALYSIS OF SUB-STATION BACKGROUND NOISE AND SEISMIC MONITORING ABILITY IN CHONGQING THREE GORGES SEISMIC NETWORK

ANALYSIS OF SUB-STATION BACKGROUND NOISE AND SEISMIC MONITORING ABILITY IN CHONGQING THREE GORGES SEISMIC NETWORK

doi:
10.16256/j.issn.1001-8956.2016.01.006
摘要:
选取重庆三峡测震台网的全部15个子台的地噪声数字记录,分别计算了每个台站在库区低水位和高水位时地噪声的地动速度均方根值( RMS值),并分析了其变化规律。离库首区越近,低水位时的地噪声( NL )低于高水位时的地噪声( NH );离库首区越远,长江左岸台站,NL >NH ,长江右岸台站,NL<NH。根据低—高水位时的地噪声,重新计算了台网重点监视区域的监测能力,得出离库首区越近,地震监测能力受到地噪声变化影响越大的结果。
Abstract:
The paper calculated root-mean-square of ground motion noise ( RMS) in low-high water level on site of digital seismic stations , using background noise digital recording of all 15 stations in Chongqing Three Gorges Reservoir seismic network .It analyzed its change rule and drew a conclu-sion that, low water level RMS(NL)lower than high water level RMS(NH)near the dam area, and far away from the dam area, on left bank of Yangtze River,NL >NH,on the right bank,NL <NH. Writers recalculated seismic network monitoring ability of specific region , drew a conclusion that , nearer to the reservoir head region , the influence to earthquake monitoring ability by noise changes was bigger .
作者 王同军 陈凯 舒涛 姜维松 戴应洪
Author: WANG Tong-jun CHEN Kai SHU Tao JIANG Wei-song DAI Ying-hong
作者单位 重庆市地震局,重庆,401147
期 刊: 内陆地震 ISTIC EI SCI PKU CSSCI
年,卷(期) 2016, 30(1)
分类号 P315.6
关键词: 三峡库区 知识脉络 地噪声 知识脉络 地动速度 知识脉络 监测能力 知识脉络
Keywords: Three Gorges reservoir area Ground motion noise Seismic velocity Monitoring ability
机标分类号 P31 TH7
基金项目 测震台网青年骨干培养专项“重庆石柱地区地壳结构与震源深度研究(20140319)”.
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