利用聚类分析方法研究新疆呼图壁大容量气枪震源重复性  

A study on the Repeatability of Large Volum Arigun Seismic Source in Hutubi,Xinjiang using Cluster Analysis Method

作　　者：苏金波[1] 王海涛[1] 王琼[1] 张文来[1] 冀战波 魏芸芸[1] 陈昊[3] 张文秀[1] SU Jinbo;WANG Haitao;WANG Qiong;ZHANG Wenlai;JI Zhanbo;WEI Yunyun;CHEN Hao;ZHANG Wenxiu(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China;Institute of Geophysics,China Earthquake Administration,Beijing 100081,China;Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou,730000,Gansu,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]中国地震局地球物理研究所,北京100081 [3]中国地震局兰州地震研究所,甘肃兰州730000

出　　处：《地震研究》2017年第4期613-618,共6页Journal of Seismological Research

基　　金：2015年行业专项(地震行业专项201508008);国家自然科学基金--呼图壁储气田充放气引起地下应力变化的地震学观测(41474051);新疆地震科学基金(201714);中国地震局监测;预测;科研三结合课题(CEA-JC/3JH-173101)联合资助

摘　　要：为研究造成新疆呼图壁大容量气枪震源重复性波动的原因,利用2015—2016年新疆呼图壁气枪震源激发池岸边的一台地震仪记录的3 214次激发信号,采用聚类分析中层次聚类方法和波形信号互相关技术,以相关系数大于0.95、对应相似度距离为0.05为标准对气枪震源信号进行聚类分析,将信号分成了2类。对可能造成气枪信号重复性波动的几种原因进行讨论,结果表明这种信号的重复性波动是气枪激发时压力不同造成的,建议通过控制激发压力的方法来解决这一问题。Use the hierarchical clustering method in clustering analysis and waveform cross-correlation technique to study the uniformity of large volum arigun seismic source in Hutubi,Xinjiang The signal is analyzed by the condition of the correlation coefficient that is greater than095,and the corresponding similarity distance that is005The3124shots of Hutubi airgun seismic source between2015and2016is divide into two clusters The repeatability analysis of several reasons of airgun source signal is discussed Our final conclusion is the signal fluctuation is due to the different pressure caused by the airgun excitation We propose to solve this problem by controlling the excitation pressure

关 键 词：气枪震源 信号重复性 波形信号互相关 聚类分析 

分 类 号：P315.3[天文地球—地震学]