摘要
20 0 0年 1月 1 5日云南姚安发生了 6 .5级地震 .震后围绕震中区架设了一个由 6套拾震器 记录仪组成的临时数字地震台网 .在所记录的余震中 ,有 40 2次余震有较精确的定位 .依照Sato的单散射模型分析观测的尾波短记录 ,获得了姚安地区地壳的尾波平均品质因子Qc(f) =49f0 .95,f=1 .5~ 2 0 .0Hz,具有高构造活动性区域的衰减特征 .
An earthquake with M=6.5 happened on January 15, 2000 in Yao′an of Yunnan P rovince. After the earthquake, a temporary digital network with 6 detectors arou nd the epicenter area was set up. 402 aftershocks were located more precisely. A ccording to coda shorting recording observed by Sato single scattering model ana lyses, the coda averaging quality factor has been acquired, Q c(f)=49 f 0.95 , f=1.5~20.0 Hz, which has the attenuation characteristics of high tectonic structural active region.
引文
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