用Weiner滤波方法处理聊古－1井氮氦比观测资料  

PROCESSING OBSERVATION DATA OF RATIO NITROGEN TO HELIUM IN WELL LIAOGU-1 USING IMPROVED WEINER FILTERING

作　　者：张昭栋[1] 马红斌[1] 黄华明[1] 董传富[1] 

机构地区：[1]山东省地震局

出　　处：《内陆地震》1995年第1期35-42,共8页Inland Earthquake

基　　金：地震科学联合基金

摘　　要：聊古－１井位于聊城－兰考断裂带北段。自１９８１年以来对该并氮氦比（Ｎ２／Ｈｅ）每天进行观测，其主要干扰因素为降雨和井水流量。其中降雨对氮氦比观测的影响不是简单的线性关系，而是带有滞后记忆效应的非线性关系。为此，我们采用了非线性的Ｗｅｉｎｅｒ滤波方法来处理降雨、井水流量、井水压力和大气压力对氮氦比的影响。为了适用于处理氮氦比，我们对Ｗｅｉｎｅｒ滤波方法进行了改进。在对聊古－１井氮氦比用改进后的Ｗｅｉｎｅｒ滤波方法处理的基础上分析了氮氦比变化与震中距小于１６０ｋｍ，震级大于Ｍｓ５．０级地震的关系。The well Liaogu-1 is located in the northern section of the Liaocheng-Lankao fault.Since 1981 the ratio of nitrogen to helium has been observed every day in this well. The precipitation and flow of well water are main disturbance factors.Among them the influence of precipitation on observation of the ratio of nitrogen to helium was not of a simple linear relation,but a nonlinear relation with lag memory effect.Therefore,we have processed the influence of the precipitation,flow and pressure of the well water and baronetric pressure on the ratio of nitrogen to helium,using nonlinear method-Weiner filtering. In order to apply to processing the ratio of the nitrogen to helium,the Weiner filtering has been improved by us.Based on proceeding the ratio of nitrogen to helium in the well Liaogu-1 by means of the improved Weiner,we have analyzed the relation between the change in the ratio of nitrogen to helium and the earthquakes (△<160 km and Ms>5. 0).

关 键 词：水化学测量 地震孕育 维纳滤波 氮 氦比 测震 

分 类 号：P315.7[天文地球—地震学]