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根据15个沉积柱状样,对“新仙女木”期气候突变事件(YD)的分布和性质进行探讨。在所有这些经高分辨率地层分析的柱状样中,均发现有“新仙女木”事件,说明在西太平洋边缘海广泛出现。从同位素与微体古生物分析的结果看,~(14)C测年约11～10kaBP的新仙女木期,是在12kaBP淡水注入海洋高峰之后,一次冬季表层水降温的短暂事件。在长江三角洲和日本海都记录了新仙女木期“视海退”现象,符合新仙女木期是两次海面快速回升期之间一次滞缓期的解释。新仙女木期的冬季表层水降温和盐度增高,均表明冬季风而不是夏季风加强。边缘海的这一次重大气候事件应当对相邻陆地有深刻影响。
Based on the 15 sedimentary column samples, the distribution and nature of the climatic events (“YD”) in the “New Nymphoides” period were discussed. In all of these columnar samples analyzed by high-resolution stratigraphy, the “new fairy wood” event was found indicating widespread occurrence in the marginal seas of the western Pacific. According to the results of isotope analysis and paleontological analysis, the wood temperature of ~ (14) C about 11 ~ 10ka BP was a transient event of a winter surface water cooling after the 12 ka BP freshwater was injected into the ocean. In the Yangtze River Delta and the Sea of Japan have recorded the new fairy wood “retreat of the sea” phenomenon, in line with the new fairy wood is the period between the rapid rise of the sea a lag period explanation. The winter fairy water temperature drop and the salinity increase of the new fairy woody stage suggest that the winter monsoon rather than the summer monsoon strengthened. This major climate event in the marginal seas should have a profound impact on the adjacent land.