根据南沙海区NS87-11柱样沉积物Mr(剩余磁化强度)的变化曲线与δ~(18)O(氧同位素)变化曲线平行对比,发现Mr的波峰、波谷与δ~(18)O揭示的古气候变化的波峰、波谷相对应。表明南沙海区沉积物的Mr记录了暖→冷→暖古气候旋回变化的特征,反映了全球性气候变化的波动周期。微体古生物分析结果可以证实这一特征。这预示海洋沉积物的Mr不仅可作为探索古气候变化的重要标志,而且可能成为第四纪磁性地层对比、划分的依据。 According to the parallel comparison of Mr (remanent magnetization) curve with δ 18 O (oxygen isotope) curve of NS 87-11 column sediment in Nansha sea area, it is found that the peaks, valleys and δ 18 O of Mr The peak of ancient climate change, trough corresponding. It shows that Mr of the sediments in the Nansha sea area records the characteristics of warm → cold → warm paleoclimate cycles and reflects the period of global climate change. Microblogging paleontological analysis can confirm this feature. This indicates that the marine sediment Mr not only can be used as an important indicator of paleoclimatic change, but also may be the basis for the comparison and division of Quaternary magnetic stratum.