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黄土高原中部的陕西泾阳、旬邑黄土剖面具有高分辨率气候记录,记录了130ka 以来的气候波动,一些细微的气候波动也被记录下来。位于大陆的黄土磁化率气候记录可以与南极冰芯气候记录对比。结果表明:Lorius 与 Jouzel 等将冰芯同位素曲线划分为 A、B、C、D、E、F、G、H 冷暖阶段,可与黄土磁化率气候曲线划分的1、2、3、4、(5、6、7)、8,9、10冷暖阶段对比。其中冰芯记录所反映的 A、C、E、G(或黄土记录反映的1、3、5、6、7、9)为暖阶段:B、D、F、H(2、4、8、10)为冷阶段。总之,黄土磁化率记录曲线与冰芯气候记录曲线的形态极为相似,指示了黄土高原地区的大陆气候变化与极地气候变化同受全球变化的影响。这证明了极地冰量变化与东亚大陆冬、夏季风强弱变化,是全球气候变化在极地与大陆的两种表现形式。黄土记录的气候变化时间滞后于冰芯记录,可能暗示着大陆气候变化滞后于极地气候变化。
High-resolution climate records have been recorded for the Jingyang and Xunyi loess sections in the central part of the Loess Plateau. Climate changes since 130 ka have been recorded and some subtle climate fluctuations have also been recorded. The loess magnetic susceptibility climate record on the mainland can be compared with the Antarctic ice core climate record. The results show that Lorius and Jouzel et al. Divide the ice core isotope curves into A, B, C, D, E, F, G and H warm and cold phases, which can be correlated with the 1,2,3,4 and 5, 6, 7), 8, 9, 10 during the warm-up phase. Among them, A, C, E, G (or 1,3,5,6,7,9 reflected by loess records) reflected by ice core records are warm stages: B, D, F, H 10) for the cold stage. In conclusion, the curves of magnetic susceptibility of loess are very similar to those of climatic records of ice cores, indicating that the continental and continental climate changes in the Loess Plateau are affected by global changes. This proves that the variation of polar ice volume and East-Asian winter and summer monsoon changes are two manifestations of global climate change in the polar regions and the mainland. The time recorded by the loess as recorded by the ice core lags behind that recorded by the ice core, which may indicate that the climate change in the mainland lags behind that in the polar regions.