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前言 南海面积约350万平方公里,其陆架辽阔,蕴藏着丰富的自然资源。南海海盆为西太平洋最西面的边缘海盆,同时受到欧亚、菲律宾海和印度—澳大利亚三大板块的作用。这块尚未充分勘探和研究的地区,引起国内外地质工作者和石油勘探开发公司越来越多的关注。由于本区跨越磁赤道两侧,正常场形态较为复杂。为了全面开展本区的地磁调查工作,我们利用国际地磁和高空物理协会(IAGA)推荐的国际地磁参考场和中国科学院地球物理所推荐的正常场公式,编制了有关计算程序进行了1°×1°的计算,并对结果进行了对比分析,提出
Foreword The South China Sea covers an area of about 3.5 million square kilometers, its vast shelf, rich in natural resources. The South China Sea basin is the westernmost edge of the Western Pacific basin, at the same time by the Eurasian, Philippine Sea and India - Australia three plates role. This area, which has not been fully explored and studied, has drawn more and more attention from geologists at home and abroad and petroleum exploration and development companies. Due to the region across the magnetic equator on both sides, the normal field morphology is more complicated. In order to fully carry out the geomagnetic survey work in this area, we make use of the International Geomagnetic Reference Field recommended by IAGA and the normal field formula recommended by Chinese Academy of Sciences for geophysics, ° calculation, and the results were compared and analyzed