Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary
National Basic Research Program of China [G2007CB815903]; National Natural Science Foundation of China [41030859]; Chinese IPY Program; China Geological Survey [H[2011]01-14-04] The late Quaternary paleoceanographic changes in the western Arctic Ocean are revealed by quantitative studies of foramini...
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ACTA OCEANOL SIN
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ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/87750 2023-05-15T14:29:01+02:00 Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary Wang Rujian Xiao Wenshen Shao Lei Chen Jianfang Gao Aiguo 高爱国 2012-01 http://dspace.xmu.edu.cn/handle/2288/87750 en_US eng ACTA OCEANOL SIN ACTA OCEANOLOGICA SINICA, 2012,31(1):83-94 WOS:000299492700010 http://dspace.xmu.edu.cn/handle/2288/87750 http://dx.doi.org/10.1007/s13131-012-0179-y LATE PLEISTOCENE ORGANIC-CARBON NORTH-ATLANTIC MELTWATER EVENTS MENDELEEV RIDGE COLOR CYCLES SEA-ICE SEDIMENTS MANGANESE SHELF Article 2012 ftxiamenuniv 2020-07-21T11:42:21Z National Basic Research Program of China [G2007CB815903]; National Natural Science Foundation of China [41030859]; Chinese IPY Program; China Geological Survey [H[2011]01-14-04] The 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. Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Beaufort Sea Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* IPY M'Clure Strait Neogloboquadrina pachyderma North Atlantic Sea ice Xiamen University Institutional Repository Arctic Arctic Ocean Canadian Arctic Archipelago Pacific M'Clure Strait ENVELOPE(-115.999,-115.999,74.498,74.498) |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
LATE PLEISTOCENE ORGANIC-CARBON NORTH-ATLANTIC MELTWATER EVENTS MENDELEEV RIDGE COLOR CYCLES SEA-ICE SEDIMENTS MANGANESE SHELF |
spellingShingle |
LATE PLEISTOCENE ORGANIC-CARBON NORTH-ATLANTIC MELTWATER EVENTS MENDELEEV RIDGE COLOR CYCLES SEA-ICE SEDIMENTS MANGANESE SHELF Wang Rujian Xiao Wenshen Shao Lei Chen Jianfang Gao Aiguo 高爱国 Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
topic_facet |
LATE PLEISTOCENE ORGANIC-CARBON NORTH-ATLANTIC MELTWATER EVENTS MENDELEEV RIDGE COLOR CYCLES SEA-ICE SEDIMENTS MANGANESE SHELF |
description |
National Basic Research Program of China [G2007CB815903]; National Natural Science Foundation of China [41030859]; Chinese IPY Program; China Geological Survey [H[2011]01-14-04] The 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. |
format |
Article in Journal/Newspaper |
author |
Wang Rujian Xiao Wenshen Shao Lei Chen Jianfang Gao Aiguo 高爱国 |
author_facet |
Wang Rujian Xiao Wenshen Shao Lei Chen Jianfang Gao Aiguo 高爱国 |
author_sort |
Wang Rujian |
title |
Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
title_short |
Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
title_full |
Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
title_fullStr |
Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
title_full_unstemmed |
Paleoceanographic records in the Chukchi Basin, western Arctic Ocean during the late Quaternary |
title_sort |
paleoceanographic records in the chukchi basin, western arctic ocean during the late quaternary |
publisher |
ACTA OCEANOL SIN |
publishDate |
2012 |
url |
http://dspace.xmu.edu.cn/handle/2288/87750 |
long_lat |
ENVELOPE(-115.999,-115.999,74.498,74.498) |
geographic |
Arctic Arctic Ocean Canadian Arctic Archipelago Pacific M'Clure Strait |
geographic_facet |
Arctic Arctic Ocean Canadian Arctic Archipelago Pacific M'Clure Strait |
genre |
Arctic Archipelago Arctic Arctic Ocean Beaufort Sea Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* IPY M'Clure Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Beaufort Sea Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* IPY M'Clure Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
op_source |
http://dx.doi.org/10.1007/s13131-012-0179-y |
op_relation |
ACTA OCEANOLOGICA SINICA, 2012,31(1):83-94 WOS:000299492700010 http://dspace.xmu.edu.cn/handle/2288/87750 |
_version_ |
1766303127801167872 |