1998年陕西泾阳MS4.8地震前高陵测点10m地温异常特征

研究分析了1998年1月5日陕西泾阳Ms4.8地震前高陵测点10m地温的变化特征。1997年高陵地温呈下降变化，12月15日温突升，该次地震前15天地温升高现象非常明显，震后恢复正常，西安市高压开关厂测点10m地温也从1997年12月中旬开始出现上升异常，1998年1月1日地温上升速度突然加大，可以认为，高陵测点观测到的10m地温异常是可信的。

ANOMALOUS FEATURES OF GEOTEMPERATURE IN THE DEPTH OF 10 M BY GAOLINGOBSERVATION POINT BEFORE THE 1998 JINGYANG MS4. 8 EARTHQUAKE, SHAANXI PROVINCE

Variation features of geotemperature in the depth of 10 m by Gaoling observation point before the Jingyang MS4.8 earthquake on Jan.5,1998,Shaanxi province are studied and analyzed.The geotemperature fell continually in 1997.The geotemperature rose suddenly from Dec.15,1997,especially in 15 days before the event and returned to normal after the event.Geotemperature variation in the depth of 10 m by observation point of high pressure switchgear plant of Xi'an city is the same as that by the Gaoling point.It is believed that rising variation of the geotemperature by the Gaoling point is the anomaly before the Jingyang MS4.8 earthquake.