陕西几例特殊的无震异常及其成因分析  

STUDY ON SOME SPECIAL ASEISMIC PRECURSORY ANOMALIES OBSERVED FROM SHAANXI SEISMIC NETWORK AND THEIR CAUSES

作　　者：吴富春[1] 张鸿福[1] 景北科[1] 段锋[1] 张义民 

机构地区：[1]陕西省地震局,陕西西安710068 [2]渭南市地震局,陕西渭南714000

出　　处：《西北地震学报》1999年第3期268-273,共6页Northwestern Seismological Journal

基　　金：地震科学联合基金资助项目

摘　　要：介绍了陕西省前兆台网记录到的几例特殊的无震异常．分析了这些异常产生的原因．认为１９８６ 年和１９９６ 年渭南双王井水位的２ 次无震异常与渭河的洪峰有关；１９７７ 年韩城地震台地倾斜特大异常可能与黄河水位变化有关；１９８３ 年安康地震台地倾斜特大异常与该地区特大洪水有关；１９９６ 年和１９９８ 年三原井水位的２Some special aseismic precursory anomalies obtained from Shaanxi precursory network are presented.Analysing the cause of these anomalies,following views are got:the two anomalies of groundwater level of Shuangwang well,Weinan in 1986 and 1996 may be caused by the flood peaks of the Weihe River;the big anomaly of ground tilt observed from Hancheng station in 1977 had relation to the level of the Yellow River;the anomaly of ground tilt observed from Ankang station in 1983 was due to the big flood in Ankang area in that time;the two big anomalies of groundwater level of Sanyuan well had relation to water storage of Fengcun reservoir.

关 键 词：陕西 异常识别 无震异常 地震预报 

分 类 号：P315.7[天文地球—地震学]