| 新疆北天山西段P波、S波衰减特征研究 |
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| 引用本文： | 高朝军,夏爱国,张志鹏,赵石柱,周康云,候赛因·赛买提.新疆北天山西段P波、S波衰减特征研究[J].内陆地震,2014(4):319-326. |
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| 作者姓名： | 高朝军 夏爱国 张志鹏 赵石柱 周康云 候赛因·赛买提 |
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| 作者单位： | 1. 新疆维吾尔自治区地震局巴里坤地震台,新疆 巴里坤,839200
2. 新疆维吾尔自治区地震局,新疆 乌鲁木齐,830011 |
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| 基金项目： | 新疆地震科学基金资助课题 |
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| 摘 要： | 针对2008年1月至2011年12月发生在新疆北天山西段的地震事件,分析新源、温泉和巴仑台3个台站记录到的波形资料,采取尾波归一化方法,计算出P、S波在多个频率点f的衰减系数Q-1P、Q-1S,利用最小二乘法拟合得到Q-1=Q0fη,得到该区域P波衰减系数和S波衰减系数。结果表明,新源研究区关于P波、S波的衰减指数为-0.982 1、-0.978 1;温泉研究区关于P波、S波的衰减指数为-1.049 7、-0.773 8;巴仑台研究区关于P波、S波的衰减指数为-0.870 0、-0.956 8。与中国云南地区关于P波、S波衰减结果相比,新源研究区域与云南的禄劝研究区地下介质衰减特性比较一致。
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| 关 键 词： | 北天山西段 尾波归一化 P波衰减指数 S波衰减指数 |
ATTENUATION CHARACTERISTIC OF P,S WAVES IN WEST SECTION OF NORTHERN TIANSHAN |
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| GAO Chao-jun,XIA Ai-guo,ZHANG Zhi-peng,ZHAO Shi-zhu,ZHOU Kang-yun,HOUSAIYIN Saimati.ATTENUATION CHARACTERISTIC OF P,S WAVES IN WEST SECTION OF NORTHERN TIANSHAN[J].Inland Earthquake,2014(4):319-326. |
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| Authors: | GAO Chao-jun XIA Ai-guo ZHANG Zhi-peng ZHAO Shi-zhu ZHOU Kang-yun HOUSAIYIN Saimati |
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| Institution: | GAO Chao-jun, XIA Ai-guo, ZHANG Zhi-peng, ZHAO Shi-zhu, ZHOU Kang-yun, HOUSAIYIN Saimati (1. Balikun Seismic Station of Earthquake Administration of Xinjiang, Bblikun 839200, Xinjiang, China; 2. Earthquake Administration of Xinjiang , Urumqi 830011, Xinjiang , China) |
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| Abstract: | According to seismic events in west section of northern Tianshan from January ,2008 to December , 2011 , this paper using coda -normalization method analyzed digital wave-record of Xinyuan, Wenquan and Baluntai stations to calculate attenuation coefficient of P wave-QP^-1 and S wave-QS^-1 under several frequencies , then they got Q^-1 =Q0 f ηby least squares method .The result showed：the attenuation-index of P and S in Xinyuan is -0.982 1 and -0.978 1, the attenuation-index of P and S in Wenquan is -1 .049 7 and -0 .773 8 , the attenuation-index of P and S in is-0 .870 0 and -0 .956 8 .Comparing with Yunan , attenuation characteristics of underground medi-um in Xinyuan and Luquan in Yunnan province is very similar . |
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| Keywords: | Northern Tianshan in Xinjiang Coda-normalization method Attenuation coefficient of P Attenuation coefficient of S |
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