摘要
用矩谐分析的方法研究了中国及其邻域(φ=10°-60°N,λ=70°-140°E)由MAGSAT卫星获得的地磁矢量异常数据,求出了卫星高度400km处的矩谐模型.据此模型,绘出了高度400km处矩谐模型的理论磁异常图.结果表明,ΔX,ΔY,ΔZ图上有很强的区域磁异常特征,新疆地区天山、阿尔泰山、塔里木地区为很强的正异常,青藏高原和喜马拉雅山一带则为负异常区,说明这些地区存在着很强的局部磁化.
Rectangular Harmonic Analysis was applied to the MAGSAT residuls data (10°-60°N, 70°-140°E) which were averaged over 1°×1° grid total number of points is 3500. To obtain rectangular hamonic model in and near China. According to the rectangular harmonic analysis model the satellite magnetic anomaly maps were constructed. Maps show a strong positive anomaly over Tian Shan, Tarim, while negative anomaly covers the area Himalaya. Suggesting the existence of a very localized magnetization in those areas.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第5期655-660,共6页
Chinese Journal of Geophysics
基金
国家自然科学基金
关键词
卫星
矩谐分析
地壳
磁异常
MAGSAT satellite, Rectangular harmonic analysis, Crustal magetic anomaly.
