| 青海大柴旦及周边地区尾波衰减特性研究 |
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| 引用本文： | 李启雷,李玉丽,周庆玲,杨广华,杨理臣. 青海大柴旦及周边地区尾波衰减特性研究[J]. 防灾技术高等专科学校学报, 2012, 0(2): 25-30 |
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| 作者姓名： | 李启雷 李玉丽 周庆玲 杨广华 杨理臣 |
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| 作者单位： | [1]青海省地震局,青海西宁810001 [2]黄河电力测试科技工程有限公司,青海西宁810001 |
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| 基金项目： | 中国地震局三结合项目（201141）资助 |
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| 摘 要： | 采用Sato单次散射模型,利用大柴旦台数字地震资料,研究了大柴旦震群序列尾波Qc值在流逝时间窗长60～90 s时间内的变化特征,计算频率从3 Hz至18 Hz,得到Qc值随频率的变化关系：Qc（f）=（72±19.9）f0.93±0.08。计算结果反映出大柴旦地震余震序列的尾波Qc值较低,说明大柴旦震源区属于构造运动较为活跃的地区,这与大柴旦地质结构特征相符。
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| 关 键 词： | 大柴旦 Sato模型 Qc值 衰减特性 |
Research on the Attenuation Characteristics of Coda Waves in Dachaidan and the Surrounding Areas of Qinghai Province |
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| Li Qilei,Li Yuli,Zhou Qingling,Yang Guanghua,Yang Lichen. Research on the Attenuation Characteristics of Coda Waves in Dachaidan and the Surrounding Areas of Qinghai Province[J]. Journal of College of Disaster Prevention Techniques, 2012, 0(2): 25-30 |
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| Authors: | Li Qilei Li Yuli Zhou Qingling Yang Guanghua Yang Lichen |
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| Affiliation: | 1 (1.Earthquake Administration of Qinghai Province,Xining Qinghai 810001; 2.Yellow River Electric Power Test Technology Engineering Limited Company,Xining Qinghai 810001) |
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| Abstract: | By means of the single scatter mode（Sato）,the variation characteristics of coda Qc value of Dachaidan earthquake swarm sequence,recorded by Dachaidan Seismic Station,were analyzed in the S-wave lapse time ranging from 60 to 90 seconds;and the coda wave Q values were calculated in the frequency from 3 Hz to 18 Hz.We obtained the relationship between coda wave value and frequency,which is Qc（f）=72±21.6·f0.93±0.08.The calculation results reflect that the coda Qc value of Dachaidan earthquake aftershock sequence was in a low level.This means Dachaidan seismic zone belongs to the tectonic active area,in consistent with the geological structure features of Dachaidan area. |
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| Keywords: | Dachaidan； Sato model； Qc value； Attenuation characteristics |
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