陕西几例特殊的无震异常及其成因分析

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的渭南双王井水位的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２次特大异常可能与附近的冯村水库蓄水有关。

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

Some 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.