基于甘肃气枪主动源的“地下云图”构建  

Construction of"underground cloud maps"based on airgun active source of Gansu

作　　者：张元生[1,2] 秦满忠 钟美娇[1,2] 邹锐 张卫东[1,2] 周涛 郭晓[1,2] 刘旭宙 李少华[1,2] ZHANG Yuansheng;QIN Manzhong;ZHONG Meijiao;ZOU Rui;ZHANG Weidong;ZHOU Tao;GUO Xiao;LIU Xuzhou;LI Shaohua(Lanzhou Institute of Seismology,CEA,Lanzhou 730000,Gansu,China;Gansu Lanzhou Geophysics National Observation and Research Station,Lanzhou 730000,Gansu,China)

机构地区：[1]中国地震局兰州地震研究所,甘肃兰州730000 [2]甘肃兰州地球物理国家野外科学观测研究站,甘肃兰州730000

出　　处：《地震工程学报》2023年第2期382-386,共5页China Earthquake Engineering Journal

基　　金：甘肃省科技重大专项(21ZD4FA011)。

摘　　要：在陆地气枪主动源技术系统不断发展的基础上,使用地震层析成像和计算机图像处理技术,把地震波物理参数(地震波速度和v P/v S)演化过程以气象云图的形式表现出来,达到“看图识天气”的目的。利用地震波速“地下云图”的结果开展地震孕育过程和机理研究,深入了解强震发生前后震源区地震波速度和波速比的时空演化表征,总结提取具有普适性的地震学前兆参数及其指标,对进一步提高地震预测预报效能有着重要科学意义。Based on the continuous development of the technical system of airgun active source on land,the evolution process of seismic waves'physical parameters(wave velocity and v P/v S)can be presented in the form of meteorological cloud map by using the techniques of seismic tomography and computer image display,so as to achieve the purpose of"reading cloud maps and recognizing weather underground".On the basis of the results of"underground cloud maps",we can study the seismogenic process and mechanism of earthquakes,deeply understand the temporal and spatial evolution characteristics of seismic wave velocity and v P/v S in epicentral area before and after strong earthquakes,and also summarize and extract universal seismic precursor parameters and indicators.The results of the study have important scientific significance for further improving the efficiency of earthquake prediction.

关 键 词：气枪主动源 地下云图 地震孕育过程 地震波速异常特征 

分 类 号：P315[天文地球—地震学]