新疆伊犁州2次6级地震加速度记录特征对比分析
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摘要
分析了伊犁州2次6级地震地震动峰值不对称比、持时、峰值衰减特征和规律,选取5个典型台站的加速度记录,其中2个台站获得了较大加速度峰值,仪器烈度达VIII度,另外3个台站在2次地震中都获取记录,一个位于伊犁河谷、一个位于北天山山前、一个位于南天山山前,分别进行了地震动反应谱和傅氏谱比特征的对比分析。通过对2次地震强震动记录特征研究,探讨新疆伊犁州地区中强地震的强震动特征。
In this paper,the peak ground motion asymmetric ratio,duration,the peak attenuation of two Ms 6 earthquake at Yili Prefecture,the characteristics and laws were analyzed.The acceleration records of five typical stations were selected,among them,the more peak of acceleration was recorded by two stations: the instrument intensity is VIII.Another two earthquakes were recorded by three stations: one station lies in Yili valley,one station lies in front of north Tianshan,one station lies in front of south Tianshan.The seismic response spectrum analysis and FFT spectrum were analyzed,and the characteristics of strong motion records of two earthquakes were studied.The results were compared and analyzed to discuss the characteristics of the moderate strong earthquakes in Yili Prefecture.
In this paper,the peak ground motion asymmetric ratio,duration,the peak attenuation of two Ms 6 earthquake at Yili Prefecture,the characteristics and laws were analyzed.The acceleration records of five typical stations were selected,among them,the more peak of acceleration was recorded by two stations: the instrument intensity is VIII.Another two earthquakes were recorded by three stations: one station lies in Yili valley,one station lies in front of north Tianshan,one station lies in front of south Tianshan.The seismic response spectrum analysis and FFT spectrum were analyzed,and the characteristics of strong motion records of two earthquakes were studied.The results were compared and analyzed to discuss the characteristics of the moderate strong earthquakes in Yili Prefecture.
引文
[1]新疆维吾尔自治区地方志编纂委员会.新疆通志[M].新疆:新疆人民出版社,2002.
[2]胡聿贤.地震工程学[M].北京:地震出版社,2006.
[3]霍俊荣.近场强地面运动衰减规律的研究[D].哈尔滨:中国地震局工程力学研究,1989.
[4]唐丽华,李锰,王海涛.伽师—巴楚地区中强地震加速度衰减关系研究[J].西北地震学报,2007,29(4):378-379.
[5]汪素云,俞言祥,高阿甲,等.中国分区地震动衰减关系确定[J].中国地震,2000,16(2):99-106.
[6]张振斌,史勇军,吕贵林,等.新疆乌恰2次5.1级地震加速度记录特征对比分析[J].地震地磁观测与研究,2011,32(6):51-55.
[7]张振斌,吕贵林.利用地脉动对新疆烈度速报台网子台场地的分类分析[J].内陆地震,2010,24(4):359:361.
[8]Nakamura.A method for dynamic characteristicsestimation of subsurface using microtremor on theground surface[J].QR of RTRI 30(1):25-23.1989.
[2]胡聿贤.地震工程学[M].北京:地震出版社,2006.
[3]霍俊荣.近场强地面运动衰减规律的研究[D].哈尔滨:中国地震局工程力学研究,1989.
[4]唐丽华,李锰,王海涛.伽师—巴楚地区中强地震加速度衰减关系研究[J].西北地震学报,2007,29(4):378-379.
[5]汪素云,俞言祥,高阿甲,等.中国分区地震动衰减关系确定[J].中国地震,2000,16(2):99-106.
[6]张振斌,史勇军,吕贵林,等.新疆乌恰2次5.1级地震加速度记录特征对比分析[J].地震地磁观测与研究,2011,32(6):51-55.
[7]张振斌,吕贵林.利用地脉动对新疆烈度速报台网子台场地的分类分析[J].内陆地震,2010,24(4):359:361.
[8]Nakamura.A method for dynamic characteristicsestimation of subsurface using microtremor on theground surface[J].QR of RTRI 30(1):25-23.1989.
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