昆仑山口西8.1级地震前后地下流体远场效应的研究  

STUDY ON EFFECT OF SUBSURFACE FLUID FAR-FIELD BEFORE AND AFTER THE WEST PASS OF KUNLUN MOUNTAINS EARTHQUAKE WITH Ms8.1

作　　者：高小其[1] 许秋龙[1] 王道[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《高原地震》2002年第3期12-20,共9页Plateau Earthquake Research

摘　　要：分析了新疆北天山地区地下流体的动态观测资料 ,发现在 2 0 0 1年 11月 14日昆仑山口西 8 1级地震前后 ,新疆北天山地区多个流体监测点的测项出现了明显的异常变化 ,其特征主要表现为 :地下流体地球化学测项出现高值异常、油气井震前发生井喷、地下流体水动态则出现同震振动效应和震后阶跃变化。最后 ,对比分析了新疆及邻区 7级以上地震和 6级强震群对北天山地区地下流体的影响 。Dynamic data of subsurface fluid in northern Tianshan in Xinjiang are analysed,and obvious anomalies are found in some subsurface fluid monitoring stations before and after the earthquake with Ms8.1 on Nov.14,2001.The characteristics are:high values of fluid geochemical parameters;blowing of oil and gas wells;coseismic effect and jump variation of underground water dynamic.The fluid influences in northern Tianshan area of earthquakes with Ms≥7.0 and Ms6.0 are comparatively analysed,and it is found that subsurface fluid far-field effect of strong earthquakes is relatively with the epicenter distance.

关 键 词：昆仑山 地下流体 远场效应 地震前兆 地震构造环境 

分 类 号：P315.723[天文地球—地震学]