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利用长链烯酮不饱和比值(UK37′)重建了黄海暖流途经的南黄海中部泥质区ZY2孔6.2calkaBP以来的海水表层温度(SST).SST变化范围为14.1～16.5℃,平均15.6℃,分为3个阶段:6.2～5.9calkaBP较高,5.9～2.3calkaBP较低且波动大,2.3calkaBP以来较高且较稳定.SST的记录与黑潮强弱的变化相似,对全球气候变冷事件有良好响应,但各阶段的响应幅度差异显著:黑潮影响强盛期SST对全球变冷事件响应弱,黑潮影响衰弱期响应强.响应幅度差异与黄海暖流作为黑潮陆架支流和冬季风诱导的补偿流的调节机制有关,黄海暖流带来的暖水将缓冲气候变冷所引起的SST降低,黑潮和东亚冬季风二者均起重要作用.SST的波动具有1482a的周期,该周期在黑潮波动中以及格陵兰冰芯、北大西洋和阿拉伯海沉积物中同样存在,显示了南黄海中部SST变化与黑潮的对应性及中国东部陆架海洋环境对全球海洋环境变化的响应.
The sea surface temperature (SST) since the ZY2 pore 6.2calkaBP in the central part of the southern Yellow Sea through the long-chain ketene unsaturated ratio (UK37 ’) was reconstructed, and the SST ranged from 14.1 to 16.5 ℃ (average 15.6 ℃) It is divided into three stages: high 6.2 ~ 5.9calkaBP, low and fluctuating 5.9 ~ 2.3calkaBP, higher and more stable since 2.3calkaBP.The records of STS are similar to those of the Kuroshio, But there was notable difference in the response amplitude at each stage: the SST response to the global cooling event was weak in the strong Kuroshio period, and the response to the Kuroshio weakening period was strong. The difference in response amplitude and the Yellow Sea warm stream as the Kuroshio shelf tributaries and the winter monsoon induced Of the compensation flow regulation mechanism, the warm water from the Yellow Sea warm current will buffer the SST caused by climate change to reduce the Kuroshio and East Asian winter monsoon both play an important role.SST fluctuations with a period of 1482a, the cycle in the The Kuroshio Fluctuation also exists in the Greenland ice core, the North Atlantic and the Arabian Sea sediments. It shows the correspondence between the SST changes in the southern South Yellow Sea and the Kuroshio, and the effects of the marine environment on the marine environment on the global marine environment in the eastern China .