中文摘要：

在西方的北极海洋的晚第四级的 paleoceanographic 变化被有孔虫目的丰富的量的研究揭示，冰木排岩屑( IRD )并且它的矿物学并且 petrological 作文， planktonic Neogloboquadrina pachyderma (罪恶)( Nps )- 18O 并且- 13C ，在从 Chukchi 盆的核心 M03 标志的源於生物、非源於生物的部件在第二中国国家北极远征期间航行。七个 IRD 事件出现在 MIS 7， 5， 3 和 1。这些 IRD 在巨大的冰山被带，它通过 MClure 海峡冰溪流被出口到博福特海，加拿大的北极群岛，然后由博福特旋回搬运了进 Chukchi 盆。低 IRD 免职在更延长冰盖子并且削弱了博福特旋回的冰川的时间期间发生了，当开的水条件和加强的博福特旋回在间冰期的时期期间赞成了 IRD 免职时。因此， IRD 事件不仅显示更粗糙的岩屑和冰出口事件的起源，而且反映博福特旋回和北美的冰表的进化历史。七轻 Nps- 18O 并且 - 13C 旅行能对海冰形成导致生产并且同位素地轻的盐水下沉的提高的率作出回应，但是与温暖的大西洋水和淡水输入无关。而，重 Nps-18O 并且 - 13C 价值独立反映减少的北极淡水，和平的水，和通气得好的表面从大陆人架和 halocline 水流水。 CaCO3 内容和 planktonic 的变化当分别地，全部的器官的碳( TOC )和蛋白石内容在冰川、间冰期的时期期间增加了并且减少时，有孔虫目的丰富能在间冰期、冰川的时期期间表明大西洋水的增长或减少的输入它能与 TOC 降级，蛋白石溶解和在底部水和沉积之间的接口的氧化还原作用条件有关。

英文摘要：

The late Quaternary paleoceanographic changes in the western Arctic Ocean are revealed by quan- titative studies of foraminiferal abundance, ice-rafted detritus （IRD） and its mineralogical and petrological compositions, planktonic Neogloboquadrina pachyderma （sin.） （Nps）-δ18O and -δ13C, biogenic and non-biogenic components in Core M03 token from the Chukchi Basin during the Sec- ond Chinese National Arctic Expedition cruise. Seven IRD events appeared at MIS 7, 5, 3 and 1. These IRD were carried in massive icebergs, which were exported to the Beaufort Sea through the M＇Clure Strait Ice Stream, Canadian Arctic Archipelago, and then transported into the Chukchi Basin by the Beaufort Gyre. Low IRD deposition occurred during the glacial times when more extended ice cover and weakened Beaufort Gyre, while the open water condition and the intensified Beaufort Gyre during interglacial periods favored the IRD deposition. Therefore, the IRD events not only indicate the provenance of coarser detritus and ice export events, but also reflect the evolutionary histories of the Beaufort Gyre and North American ice sheet. Seven light Nps-δ18O and -δ13C excursions could respond to enhanced rates of sea ice formation resulting in the pro- duction and sinking of isotopically light brines, but was irrelevant to the warm Atlantic water and freshwater inputs. Whereas, the heavy Nps-δ18O and -δ13C values separately reflect the lessened Arctic freshwater and Pacific water, and well-ventilated surface water from the continental shelf and halocline water. Variations of CaCO3 content and planktonic foraminiferal abundance during the interglacial and glacial periods can demonstrate the incremental or diminishing input of the Atlantic water, while the total organic carbon （TOC） and opal contents increased and decreased during the glacial and interglacial periods, respectively, which could be related to the TOC degradation, opal dissolution and redox conditions of interface between the bottom water and sediments.