亚洲MAGSAT卫星磁异常图

使用２０多万个ＭＡＧＳＡＴ卫星磁测数据，编绘亚洲卫星标量（△Ｆ）和矢量（△Ｘ，△ｙ，△Ｚ）磁异常图（２０°ｓ－６０°Ｎ，５０°Ｅ－１６０°Ｅ）．为了提取岩石层卫星磁异常，首先对ＭＡＧＳＡＴ卫星数据进行了筛选，然后进行主磁场、磁层场、电离层场和感应场改正，并消除虚假测点．将卫星数据分成黎明组、黄昏组和联合组，分别绘制相应的卫星磁异常图．根据１°×１°的网点值，用计算机编绘亚洲卫星磁异常图．初步分析了卫星磁异常与大地构造的关系．

MAGSAT MAGNETIC ANOMALY MAPS FOR ASIA

Based on more than two hundred thousands MAGSAT data（the latitude and longitude ranges of data are from 20°S to 60°N and 50°E to 160°E）,the scalar and Vector magnetic anomaly maps for Asia are produced.In order to extract the lithospheric magnetic anomalies,the MAGSAT data were selected,the main magneticfield,magnetospheric,ionospheric and induction fields were corrected,and some unrealistic observed data were deleted.MAGSAT data were divided into dawn data set （06:00LT）,dusk data set（18:00LT）,dawn and dusk combined data set.The region studied is divided into cells,the size of cell is one degree in latitude and longitude.The value of the lithospheric magnetic anomalies at the center of each cell is taken as the mean values of the data falling Into the cell.According to the grid point values,the contour maps are produced.They include:1.The △X,△Y,△Z and △F magnetic anomaly maps derived from dawn data set only.2.The △X,△Y,△Zand △F magnetic anomaly maps derived from dusk data set only 3.The △X,△Y,△Zand△F magnetic anomaly maps derived using dawn and dusk combined data set.The contour interval is 2nT.The relationships between the magnetic anomalies and geological tectonics were analysed.