日极差法在识别地下水位异常动态中的应用  

THE APPLICATION OF DAILY EXTREMUM DIFFERENCE METHOD TO RECOGNIZING THE ANOMALIES OF GROUNDWATER LEVEL BEHAVIOR OBSERVATION

作　　者：卢静芳[1] 许秋龙[1] 张洪斌[1] 高小其[1] 

机构地区：[1]新疆维吾尔自治区地震局,乌鲁木齐830011

出　　处：《内陆地震》1999年第1期64-71,共8页Inland Earthquake

摘　　要：针对新疆呼图壁２１ 号泉地下水位动态特征，提出新的识别异常方法——日极差法。在分析天山中段５ 级地震和新疆境内大于６．０ 级地震前后２１ 号泉地下水位动态异常变化时，发现用日极差法消除水动态随机变化，突出、识别异常，效果显著。震例验证结果及地震预报效能评价证明：日极差法具有操作性能强，简便、快速、有效的特点。ln the light of the dynamic characteristics of groundwater level of Hutubi,Xinjiang,Spring No.21,a new anomaly recognizing method——daily extremum difference method is suggested. Using this method to analyze the dynamic variation of groundwater level of Spring No.21 before and after 5.0≤M S≤5.9 earthquakes in Middle Tianshan and M S≥6.0 earthquakes in Xinjiang,it is found that the method can eliminate the random variation of groundwater level behavior and make the anomalies outstanding very well.The test for prediction results of earthquake examples and the evaluation for prediction effects prove daily extremum difference method to be simple,speedy and easily operated.

关 键 词：地下水动态 地震预报 异常特征 日极差法 

分 类 号：P315.7[天文地球—地震学]