青海东部流体异常在中强震前的特征分析

利用海东地区的流体观测资料分析了在强震前的异常特征，同时探讨了数字化观测资料的典型震例。通过分析研究表明，青海东部地区的流体在地震前趋势性异常不显著，短期异常特征较为明显，数字化流体观测资料在震前存在明显的短期异常过程，其中乐都气氡、平安表层水温、乐都表层水温短期异常明显，民和、循化水氡存在破年变或高值波动的中短期异常。

ANALYSIS ON CHARACTERISTICS OF FLUID ANOMALIES BEFORE THE MODERATELY STRONG EARTHQUAKES IN THE EASTERN QINGHAI PROVINCE

The anomaly characteristics before the moderately strong earthquakes are analyzed by using the fluid ob- servation data in Haidong area in Qinghai province, and the digital observation data of the typical earthquake exam- pies are discussed, the results show that the fluid in eastern Qinghai has not significant trend anomalies before earthquakes, the short-term anomaly characteristics are obviously, the digital fluid observation data have a process of short-term anomalies, especially gas radon in Ledu, surface water temperature in Ping＇an and Ledu. The water radon in Minhe and Xunhua appeared middle-short term anomalies of yearly change and high values.