摘要
根据第七代国际地磁参考场（ＩＲＦ）．计算亚洲地区（１０Ｎ—７０Ｎ，４０Ｅ－－１６０Ｅ）各个地磁要素１９００－－２０００年期间（时间间隔为５年）１网格值；绘制相应年代地磁北向分量（Ｘ）、东向分量（Ｙ）和垂直分量（Ｚ）的长期变化分布图；分析地滋长期变化的时空变化特征．
Based on the seventh generation or International gEomagnetic Reference Field(IGRF), the 1 x geomagnetic secular variation gradded values of each geomagneticcomponent (interval is 5 yrs.) were calculated, and the corresponding secular variationcharts (X, Yand Zfor north, east and vetical componeint, respectively) were drawnover Asia (10 N--70 N, 40 E-- 160 E) for 1900-2000. The temporal and spatialvariation characteristics orthe geomagnetic secular variation were analysed.
出处
《地球物理学进展》
CSCD
1999年第2期58-64,共7页
Progress in Geophysics
基金
国家自然科学基金!49774219
关键词
国际地磁参考场
长期变化
亚洲地区
地磁场
International geomagnetic reference field, Secular variation, Asia
