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dc.contributor.authorWang Rujianzh_CN
dc.contributor.authorXiao Wenshenzh_CN
dc.contributor.authorShao Leizh_CN
dc.contributor.authorChen Jianfangzh_CN
dc.contributor.authorGao Aiguozh_CN
dc.contributor.author高爱国zh_CN
dc.date.accessioned2015-07-22T03:11:55Z
dc.date.available2015-07-22T03:11:55Z
dc.date.issued2012-01zh_CN
dc.identifier.citationACTA OCEANOLOGICA SINICA, 2012,31(1):83-94zh_CN
dc.identifier.otherWOS:000299492700010zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/87750
dc.descriptionNational Basic Research Program of China [G2007CB815903]; National Natural Science Foundation of China [41030859]; Chinese IPY Program; China Geological Survey [H[2011]01-14-04]zh_CN
dc.description.abstractThe late Quaternary paleoceanographic changes in the western Arctic Ocean are revealed by quantitative studies of foraminiferal abundance, ice-rafted detritus (IR)) and its mineralogical and petrological compositions, planktonic Neogloboquadrina pachyderma (sin.) (Nps)-delta O-18 and -delta C-13, biogenic and non-biogenic components in Core M03 token from the Chukchi Basin during the Second Chinese National Arctic Expedition cruise. Seven IRD events appeared at MIS 7, 5, 3 and I. 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 I RD 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-delta O-18 and -delta C-13 excursions could respond to enhanced rates of sea ice formation resulting in the production and sinking of isotopically light brines, but was irrelevant to the warm Atlantic water and freshwater inputs. Whereas, the heavy Nps-delta O-18 and -delta C-13 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 mid glacial periods can demonstrate the incremental or diminishing input of the Atlantic water, while the total organic carbon (TOG) 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.zh_CN
dc.language.isoen_USzh_CN
dc.publisherACTA OCEANOL SINzh_CN
dc.source.urihttp://dx.doi.org/10.1007/s13131-012-0179-yzh_CN
dc.subjectLATE PLEISTOCENEzh_CN
dc.subjectORGANIC-CARBONzh_CN
dc.subjectNORTH-ATLANTICzh_CN
dc.subjectMELTWATER EVENTSzh_CN
dc.subjectMENDELEEV RIDGEzh_CN
dc.subjectCOLOR CYCLESzh_CN
dc.subjectSEA-ICEzh_CN
dc.subjectSEDIMENTSzh_CN
dc.subjectMANGANESEzh_CN
dc.subjectSHELFzh_CN
dc.titlePaleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternaryzh_CN
dc.typeArticlezh_CN


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