中文摘要：

Multiproxy 调查在从 Chukchi 高原收集的核心 08P23 上被执行了，西方的北极海洋，在第三中国国家北极远征期间。核心被始于海洋的同位素舞台(MIS ) 3 由加速器的联合集中度谱(AMS ) carbon-14 标明日期和地区性的核心关联。五突出的冰木排岩屑(IRD ) 的一个总数事件在 MIS 2 和 MIS 3 被认出。在 MIS 3 的 IRD 来源从加拿大的北极群岛的广阔碳酸盐岩石露头被发源，在 MIS 2 的碎屑状的石英可以有欧亚的起源。大多数 < 啜 class= “ a-plus-plus ” > 18 O 并且 < 啜 class= “ a-plus-plus ” > 13 Neogloboquadrina pachyderma 的 C 价值(左首)(Nps ) 在核心， 08P23 比表面沉积的平均价值轻。打火机 < 啜 class= “ a-plus-plus ” > 18 O 并且 < 啜 class= “ a-plus-plus ” > 13 在在 MIS 1 和 MIS 3 的二棕色的层的 Nps 的 C 价值从 meltwater 事件被结果；并且那些被提高的海冰形成在在 MIS 3 的灰色的层引起。<啜class=“ a-plus-plus ”> 18 O 价值相反地变化了与<啜class=“ a-plus-plus ”> 13 在 MIS 2 的 C 显示学习区域被厚海冰或冰表被低温度和小 meltwater 盖住，它阻止了生物生产率和海空气交换，以及水团通风。covaried 光价值 < 啜 class= “ a-plus-plus ” > 18 O 并且 < 啜 class= “ a-plus-plus ” > 13 在 MIS 1 和 MIS 3 的 C 从 meltwater 或盐水注射被结果。

英文摘要：

Multiproxy investigations have been performed on Core 08P23 collected from the Chukchi Plateau, the western Arctic Ocean, during the Third Chinese National Arctic Expedition. The core was dated back to Ma-rine Isotope Stage （MIS） 3 by a combination of Accelerator Mass Spectrometric （AMS） carbon-14 dating and regional core correlation. A total of five prominent ice-rafted detritus （IRD） events were recognized in MIS 2 and MIS 3. The IRD sources in MIS 3 are originated from vast carbonate rock outcrops of the Canadian Arctic Archipelago and clastic quartz in MIS 2 may have a Eurasian origin. Mostδ18O andδ13C values of Neogloboquadrina pachyderma （sinistral） （Nps） in Core 08P23 are lighter than the average values of surface sediments. The lighterδ18O andδ13C values of Nps in the two brown layers in MIS 1 and MIS 3 were resulted from meltwater events; and those in the gray layers in MIS 3 were caused by the enhanced sea ice formation. Theδ18O values varied inversely withδ13C in MIS 2 indicate that the study area was covered by thick sea ice or ice sheet with low temperature and little meltwater, which prevented the biological productivity and sea-atmosphere exchange, as well as water mass ventilation. The covaried light values ofδ18O andδ13C in MIS 1 and MIS 3 were resulted from meltwater and/or brine injection.