定襄泉水氡异常与地震活动关系的研究  

STUDY ON THE RELATION BETWEEN THE SPRING WATER RADON AND SEISMIC ACTIVITY IN DINGXIANG REGION

作　　者：范雪芳[1] 刘巍[1] 

机构地区：[1]山西省地震局,太原030002

出　　处：《华北地震科学》1998年第4期51-57,共7页North China Earthquake Sciences

摘　　要：较系统地分析了山西省定襄泉的地震水文地球化学条件、水氡的主要干扰因素和年动态变化特征以及趋势异常的判定与华北地区地震活动关系等问题。研究结果表明，水氧观测的主要干扰是降雨的淡化，水氡的年动态变化规律为春低秋高型；该泉自1979年投入观测以来，共出现3次趋势性高值变化，每次变化均与山西地震带及华北地区的中强地震活动的增强过程有对应关系，表明水氡异常变化与华北地区应力场的增强、调整过程是有关的。In this paper,the problems about the conditions of the seismic hydrogeochemical,the mainly interference factors,yearly dynamic characteristics,and the relation between the judgement of trend abnormatity and the seismic activity in North China region are Systematicaly analyzed. The study results show that one of the mainly interference factors of water radon observation is the desalination of rain,and that the yearly dynamic rule of water radon is the spring-low and Autumn-high kind. Since the spring water have been abserved in 1979,there are altogether three times of trend high value variation and every variation there correspond the increasing process of the moderate strong seismic activity in Shanxi seismic zone and Huabei region. This indicated that the water radon abnormal variation is related to the increase of the stress field in Huabei region and its regulation process.

关 键 词：氡异常 地震活动性 山西 应力场 地震预报 

分 类 号：P315.7[天文地球—地震学] P315.5[天文地球—固体地球物理学]