辽宁及邻区地磁场的长期变化特征  

CHARACTERISTIC OF GEOMAGNETIC SECUIAR VARIATION IN LIAONING AND ITS NEIGHBOURING AREAS

作　　者：董玉兰[1] 

机构地区：[1]辽宁省地震局地震大队

出　　处：《防灾减灾学报》1989年第3期33-39,共7页Journal of Disaster Prevention And Reduction

基　　金：地震科学联合基金制课题<东北及邻区地球磁场分布特征研究>1985;10~1987;12

摘　　要：本文在研究东亚地磁场长期变"双焦"特征的基础上,着重分析了辽宁及邻区1970-1979年F、Z之长期变图象及特征.并利用辽宁省地磁台站1980-1988年资料给出长期变化的量级,为震磁预报提供背景场依据.This paper is based on double focus charactevistic of geomagnetic secular change in East-Asia region, and analyses F's and Z's secular change from 1970 to 1979 for pattern and characteristic in Liaoning and near area. we have obtained the order of gocmagnetic seculbr variation by observing data of geomagnetic stations in Liaoning from 1980 to 1988. The results as background field are useful for predicting earthquake.

关 键 词：地磁台站 纬差 地磁图 背景场 中心偶极子 地磁要素 西向漂移 局部异常 台站观测 古地磁 

分 类 号：P315[天文地球—地震学]