CAJ | 학술논문

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 、QS－1，利用最小二乘法拟合得到Q－1＝Q0 f η，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－0．9821、－0．9781；温泉研究区关于P波、S波的衰减指数为－1．0497、－0．7738；巴仑台研究区关于P波、S波的衰减指数为－0．8700、－0．9568。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。
침대2008년1월지2011년12월발생재신강북천산서단적지진사건，분석신원、온천화파륜태3개태참기록도적파형자료，채취미파귀일화방법，계산출P、S파재다개빈솔점f적쇠감계수Q－1P 、QS－1，이용최소이승법의합득도Q－1＝Q0 f η，득도해구역P파쇠감계수화S파쇠감계수。결과표명，신원연구구관우P파、S파적쇠감지수위－0．9821、－0．9781；온천연구구관우P파、S파적쇠감지수위－1．0497、－0．7738；파륜태연구구관우P파、S파적쇠감지수위－0．8700、－0．9568。여중국운남지구관우P파、S파쇠감결과상비，신원연구구역여운남적록권연구구지하개질쇠감특성비교일치。
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-Q-1P 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 .