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根据分析数据,制作了南海北部V_3孔的12×10~4a以来的氧同位素曲线,比较南海北部、加勒比海.赤道太平洋西部及红海海区晚更新世以来的氧同位素曲线,它们的型式基本相同,但南海北部的曲线,变化的幅度比较大,而且约4.1×10~4a与约2.3×10~4a的周期变化显示比较明显,说明冰期中南海与外洋水体交换较少,且受北方来的干、冷气流与东北季风漂流的影响较大.在南海北部的曲线中,个别点的变化比较特殊,它可能与浊流作用的干扰有关。
According to the analysis data, the oxygen isotope curve of V_3 hole in the northern South China Sea since 12 × 10 ~ 4a has been produced. The oxygen isotope curves since the late Pleistocene in the northern South China Sea, the Caribbean Sea, the western Equatorial Pacific Ocean and the Red Sea are compared. However, the curves in the northern South China Sea varied greatly, and the periodic variations of about 4.1 × 10 -4 a and about 2.3 × 10 -4 a showed more obvious, which indicated that there was less exchange between the Zhongnanhai and the oceans in the glacial period, Cold air flow and northeaster monsoon drifting have a greater impact on the curve of the northern South China Sea, the individual point changes more special, it may be perturbed by turbidity effect.