【英文摘要】Multiple proxies indicated paleoceanographic conditions have been built upon relative investigations among appearance features, biogenic components, oxygen and carbon isotopes, sedimentology and geochemistry of the surface sediments collected in the western Arctic Ocean, which goes along with modern oceanic environmental parameters, melt-water boundary, nutrients and productivity, temperature and salinity, two currents, providing a base for paleoceanographic study. Investigated results show that light excursions in N.pachyderma s.(Nps) 18O and 13C happened seven times, likely indicating the production and sinking of isotopically light brines caused by enhanced rate of the sea ice formation. Because concomitant decrease occurred in planktonic foraminiferal abundance and ice-rafted detritus (IRD), these light Nps 18O and 13C values unlikely reflect inputs of freshwater and warm Atlantic waters. Identified seven IRD events appeared in interglacials and deglacials in the Chukchi Basin. These IRD carried in massive icebergs 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. Therefore, the IRD events in the Chukchi Basin 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. In the interglacial Chukchi Basin, low TOC and opal contents suggest that although lessening sea ice coverage and more nutrition supply enhanced sea surface productivity, well-ventilated and oxygenated bottom water, together with reinforcing degradation and dissolution, resulted in decreasing TOC and opal contents preserved in the sediments. In the glacial Chukchi Basin, high TOC and opal contents suggest that although extensive sea ice coverage and short of nutrition supply reduced sea surface productivity, bad-ventilated and anoxic bottom water, together with weakening degradation and dissolution, led to increasing TOC and opal contents preserved in the sediments.