NDLI: Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary

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Seasonal variation of eddy kinetic energy in the South China Sea

Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean

Improvement and application of a saturation based wave dissipation function in SWAN model

The estimate of sea ice resources quantity in the Bohai Sea based on NOAA/AVHRR data

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Upper ocean responses to category 5 typhoon Megi in the western north Pacific

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The influence of macronitrogen (NO 3 − and NH 4 + ) addition with Ulva pertusa on dissolved inorganic carbon system

Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary

One new free-living marine nematode species of genus Cephalanticoma from the South China Sea

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Acclimatory responses to high-salt stress in Chlamydomonas (Chlorophyta, Chlorophyceae) from Antarctica

Numerical study of shoreline changes by emergency beach nourishment project at the Middle Beach of Beidaihe, China

Flow cytometry investigation of picoplankton across latitudes and along the circum Antarctic Ocean

Acta Oceanologica Sinica : Volume 30

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Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary

Content Provider	Springer Nature Link
Author	Wang, Rujian Xiao, Wenshen Shao, Lei Chen, Jianfang Gao, Aiguo
Copyright Year	2012
Abstract	The late Quaternary paleoceanographic changes in the western Arctic Ocean are revealed by quantitative studies of foraminiferal abundance, ice-rafted detritus (IRD) and its mineralogical and petrological compositions, planktonic Neogloboquadrina pachyderma (sin.) (Nps)-δ $^{18}$O and -δ $^{13}$C, 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 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-δ $^{18}$O and -δ $^{13}$C 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-δ18O and -δ $^{13}$C values separately reflect the lessened Arctic freshwater and Pacific water, and well-ventilated surface water from the continental shelf and halocline water. Variations of CaCO$_{3}$ 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.
Starting Page	83
Ending Page	94
Page Count	12
File Format	PDF
ISSN	0253505X
Journal	Acta Oceanologica Sinica
Volume Number	31
Issue Number	1
e-ISSN	18691099
Language	English
Publisher	The Chinese Society of Oceanography
Publisher Date	2012-01-18
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	IRD events ice sheet light Nps-δ $^{18}$O and -δ $^{13}$C excursions surface productivity late Quaternary Arctic Ocean Chukchi Basin Environmental Chemistry Ecology Engineering Fluid Dynamics Oceanography Marine & Freshwater Sciences Climate Change
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary

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