乌鲁木齐10号泉流体综合观测及映震灵敏性初析  

PRELIMINARY ANALYSIS ON SYNTHETIC FLUID OBSERVATION OF URUMQI SPRING NO.10 AND ITS EARTHQUAKE-REFLECTING SENSITIVITY

作　　者：高小其[1] 许秋龙[1] 张学敏[1] 李艳萍[1] 卢静芳[1] 崔勇[1] 

机构地区：[1]新疆维吾尔自治区地震局,乌鲁木齐830011

出　　处：《内陆地震》2000年第3期243-251,共9页Inland Earthquake

摘　　要：从 198 0年至 1999年 10月底 ,距 10号泉 30 0 km范围内共发生 5级以上地震 14次 ,其中在13次地震前 ,该泉水化学项目有前兆异常反应。随着近年来对资料的进一步观测和分析 ,该泉的部分水化学参数也具有较好的强震远场效应。在 15项测项中 ,有 10项分别在不同的地震前出现过前兆异常。分析该泉的映震灵敏性 ,初步认为原因有以下方面 :1泉点处于活动断裂带上 ;2干扰因素少 ;3处于多层含水层混合的不稳定带 ;4综合观测为寻找地震异常提供了更为丰富的依据。From 1980 to the end of October in 1999,14 earthquakes with M\-S≥5 occurred within 300 km from the No.10 spring in Urumqi.Before 13 of them,the hydrochemical parameters of the spring showed anomalies.With the deepening of the observation and study,it is found that some parameters can als o reflect far-field strong shocks quiet well.Of 15 hydrochemical parameters,10 showed anomalies before different events separately.The reasons that the No.10 s pring has better earthquake-reflecting sensitivity were analyzed as follows: first,the spring eye lies on an active fault;second,disturbance factors are less ;third,the spring flow is from the mixed groundwater of multilayed aquifer;forth ,synthetic observation provides conditions for finding more seismic anomalies.

关 键 词：地球化学异常 地震预报 地下水 强震远场效应 

分 类 号：P315.724[天文地球—地震学]