云南区域数字地震台网的监测能力与限幅问题  

The research for earthquake monitoring and clipping level of Yunnan seismic network

作　　者：王俊[1] 蔡舒梅[2] 崔庆谷[2] 

机构地区：[1]云南大学地球物理系,中国昆明650091 [2]云南省地震局监测中心,中国昆明650224

出　　处：《地震地磁观测与研究》2007年第1期84-89,共6页Seismological and Geomagnetic Observation and Research

摘　　要：采用地噪声包络幅度作为背景噪声的统计特征量,利用噪声峰值角频率处的地噪声速度振幅与对应的地噪声位移振幅Aμn的转换关系,把AV换算成近震震级公式中所需的位移量Aμ,在此基础上,计算了云南数字地震台网的监测能力,计算结果与实际观测结果相符。同时,分析了云南“九五”地震监测台网的大震限幅问题。In this paper, using the envelope amplitude of seismic noise as the statistical parameter of background seismic noise, and according to the transformation relation between Av and Aμn at the angle frequency of noise to get the Aμ, the monitoring ability of Yunnan seismic network for regional earthquakes has been estimated by the ML magnitude formulas. The results are consistent well with actual observation. On the other hand, the problem of clipping of Yunnan seismic network is analyzed in detailed if strong earthquakes occur.

关 键 词：地噪声 峰值角频率 监测能力 限幅 

分 类 号：P315.78[天文地球—地震学]