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通过YS01A柱的底栖有孔虫的分析,结合相应的AMS14 C测年数据,对南黄海泥质区西部6.8kaBP以来的沉积速率、海水深度以及沉积环境进行了初步探讨。结果表明:1.YS01A柱中底栖有孔虫的含量丰富,以陆架浅水种类为主,缺少喜暖种类;2.沉积速率达到1.29mm/a,较泥质区其他地区偏高;3.该地区在3.2kaBP之前,海水深度呈逐渐增加趋势,约在3.2kaBP前后达到最大,随后水深变浅;4.在5.6kaBP之前受黄海沿岸流的影响较强,海水温度和盐度均偏低;5.6～4.8kaBP阶段黄海沿岸流的影响减弱而黄海冷水团的影响增强,海水温、盐度增高,4.8kaBP之后,演变为现今状况。
Based on the analysis of benthic foraminifera from YS01A column and the corresponding AMS14C dating data, the sedimentation rate, seawater depth and depositional environment of the northern Huanghai muddy area since 6.8kaBP were discussed. The results showed that: 1. The contents of benthic foraminifera in the column of YS01A were rich, mainly in the shallow shelf of the continental shelf, lacking in the kind of warmth; 2. The deposition rate reached 1.29mm / a, which was higher than other areas in the muddy area; Before 3.2kaBP, the seawater depth gradually increased and reached the maximum around 3.2kaBP, and then the water depth became shallow. 4. The influence of the Yellow Sea coast before 5.6kaBP was strong, and the seawater temperature and salinity were both low The influence of the Yellow Sea coast flow was weakened during the period of 5.6-4.8 kaBP, and the influence of the Yellow Sea cold water mass was enhanced. After the temperature and salinity of seawater increased 4.8 kaBP, the current situation was evolved.