节点文献
中国及邻近地区地磁正常场及其长期变化的计算
NORMAL MAGNETIC FIELD IN CHINA AND ITS ADJACENT AREA AND CALCULATION OF ITS SECULAR VARIATION
【摘要】 本文根据国际地磁参考场系数,计算了中国地区1945~1990年代2~0×2~0网格地磁正常场值,并绘出了相应的正常场等值线图和等变线图,对其变化规律进行了分析.
【Abstract】 In this paper, a calculation of normal magnetic field in China by 29× 20 grids is made from the coefficient of international geomagnetic reference field during 1945-1990. A contour map and iso-grade map of relevant normal field are compiled, and its variation regularities are also analysed.
【关键词】 地磁正常场;
国际地磁参考场;
地磁场模型;
中国地区;
【Key words】 International geomagnetic reference field ? Geodetic coordinate system t Geocentric coordinate system?China contioent; Geomagnetic field model;
【Key words】 International geomagnetic reference field ? Geodetic coordinate system t Geocentric coordinate system?China contioent; Geomagnetic field model;
【基金】 地震科学联合基金资助项目(88042)
- 【文献出处】 华南地震 ,South China Journal of Seismology , 编辑部邮箱 ,1993年02期
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