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对南极普里兹湾海区NP95_1柱样沉积物粒度、磁学参数等研究表明 ,15ka以来南极海区沉积了两套冰碛层 ,分别对应着南极地区的YoungerDryas冷事件和Heinrich 1冷事件 ,其中YD发生于 11 7～ 10 3ka ,H1事件发生于 14 3～ 13 6ka ,南极地区的全新世始于约 10 3ka .研究表明 ,南极 15ka以来的古气候变化可与全球其他地区的古气候变化资料相对应 ,表明了千年尺度的古气候变化具有全球性和同时性 .此外 ,磁组构分析还表明 ,古气候的变化与大洋环流的改组密切相关 .
The study on the grain size and magnetic parameters of NP95_1 column in Prydz Bay of the Antarctic indicates that two glacial moraine layers have been deposited in the Antarctic sea since 15 ka, corresponding to the Younger Dryas and Heinrich 1 cold events in the Antarctic, with YD Occurred from 11 7 to 10 3 ka, H1 occurred from 14 3 to 13 6 ka, and the Holocene in the Antarctic began at about 10 3 K. Studies have shown that paleoclimatic changes since the Antarctic 15 ka can be correlated with paleoclimatic changes in other parts of the world Correspondingly, it shows that the paleoclimatic changes on a millennium scale are global and simultaneity.In addition, the magnetic structure analysis also shows that the paleoclimate change is closely related to the reorganization of the oceanic circulation.