鲁豫交界地区尾波Q_c值分析研究

英文篇名：Analysis on Q_c Value of Coda in the Boundary Area between Shandong and Henan Province
中文刊名：山东国土资源
英文刊名：Shandong Land and Resources
作者：苏道磊 ; 刘财 ; 刘希强 ; 周彦文 ; 董晓娜
英文作者：SU Daolei1 ; 2 ; LIU Cai1 ; LIU Xiqiang3 ; ZHOU Yanwen3 ; DONG Xiaona3(1.Geo-exploration Science and Technology College of Jilin University ; Jilin Changchun 130026 ; China ; 2.Jinan Earthquake Administration Bureau ; Shandong Jinan 250099 ; China ; 3.Shandong Earthquake Administration Bureau ; Shandong Jinan 250014 ; China)
中文关键词：地球介质 ; 品质因子 ; 尾波 ; 测量方法 ; 特征
英文关键词：Earth media ; quality factors ; coda ; determination method ; characteristics
出版日期：2010-09-15
机构：吉林大学地球探测科学与技术学院;济南市地震局;山东省地震局;
年：2010
期：09
出版单位：山东国土资源

摘要

该文对濮阳台记录的21次地震进行了地震波衰减研究,讨论了地球介质品质因子随频率变化的关系;利用不同地震采用不同流逝时间的尾波品质因子测定方法,有效去除了由于不同地震或同一地震的地震散射波在纵向介质中穿透深度的不同而导致对品质因子测量结果的影响,从而有利于扑捉到品质因子的异常变化特征与地震孕育过程的关系。利用改进后的模型,对鲁豫交界地区尾波值进行了计算,得到了该地区品质因子随频率的变化关系和区域介质衰减的时间变化特征。
According to previous research results of 21 times seismic wave attenuation earthquake records in Puyang station,the relationship between the quality factors accompanying with versus frequency is discussed.Different earthquakes are determined by using different wave quality factors.It can eliminate the impact of the quality factors measurements caused by the earthquake seismic wave scattering in the vertical penetration depth at the same or different earthquakes.It will help to capture the relationship between the abnormal changes characteristics of the quality factors and the earthquake preparation process.By using the improved model,coda wave Qc value of boundary between Shandong and Henan province is calculated,then the relationship of quality factors with frequency attenuation and the temporal changes of the regional media attenuation is gained as well.

引文

[1]Bianco F,Castellano M,DelPezzo E and Ibanez J.1999.At-tenuation of the short period seismic waves at Mt.Vesuvius,Italy[J].Geophys.J.Int.138:67~76.
    [2]Sato H.1977.Single isotropic scattering model includingwave conversions:Si mple theoretical model of the short-peri-od body wave propagation[J].J.Phys.Earth 25:163-176.
    [3]Dominguez T,Rebollar CJ.1997.Attenuation of coda wavesat the Cerro Prieto Geothermal Fileld,Baja California,Mexico[J].Bull.Sei m.Soc.Am.87:1368-1374.
    [4]Cong L J,Mejia Mitchell B J.2000.Attenuation dispersion ofP waves in near the New Madrid seismic zone[J].Bull.Seism.Soc.Am.90(3):679-689.
    [5]Pulli J J.1984.Attenuation of coda waves in New England[J].Bull.Sei m.Soc.Am.74:1149-1166.
    [6]刘希强,石玉燕,曲均浩,等.2009.品质因子的尾波测定方法讨论[J].中国地震,25(1):11-23.
    [7]刘明,徐洪波,宁国勤编著.2006.数字信号处理—原理与算法实现[M].北京:清华大学出版社,207-212.
    [8]王济,胡尧编著.2005.MATLAB在振动信号处理中的应用[M].北京:中国水利出版社,134-137.