Productivity-climate coupling recorded in Pleistocene sediments off Prydz Bay (East Antarctica)

doi:10.1016/j.palaeo.2017.06.018

	Productivity-climate coupling recorded in Pleistocene sediments off Prydz Bay (East Antarctica)
	Wu, Li 1; Wang, Rujian 1; Xiao, Wenshen 1; Ge, Shulan 2; Chen, Zhihua 2; Krijgsman, Wout 3
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2017-11
卷号	485 页码:260-270
关键词	Orbital scales Age model Nutrient supply CO2 cycling Carbonate preservation
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2017.06.018
英文摘要	Export-production in the Southern Ocean is thought to be tightly correlated with atmospheric CO2 fluctuations over geological times. Relevant studies are, however, mainly confined to the Atlantic and Pacific sectors of the Southern Ocean and often only cover the last glacial-interglacial cycle. Here, we present a sediment record retrieved off Prydz Bay (East Antarctica) spanning the last similar to 520 kyrs. We show that the distribution pattern of local export production is closely coupled with global climate change on orbital time scales. We propose that the dominant factors controlling local export production include the amount of nutrients supply from the ocean interior and the extent of sea ice cover, thus representing the combined history of deep water exposure/ventilation and the sea ice coverage in the studied area. Sharp increases in the local export production coincide with abrupt increase in atmospheric CO2 concentrations during deglacial periods, indicating drastic outgassing of the upwelled deep water in the Southern Ocean. Gradually decrease in the export production following interglacial peaks concurs with decrease in deep water exposure/ventilation and increase in sea ice cover, explaining the early decline in atmospheric CO2 over a glacial-interglacial cycle. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	SEA-SURFACE TEMPERATURE ; LAST GLACIAL MAXIMUM ; DEEP SOUTHERN-OCEAN ; LATE-QUATERNARY ; ATMOSPHERIC CO2 ; ICE-CORE ; BARITE PRESERVATION ; CONTINENTAL-MARGIN ; ISOTOPIC EVIDENCE ; BIOLOGICAL PUMP
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000419747400019
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26129]
专题	自然资源部第一海洋研究所
通讯作者	Wu, Li; Wang, Rujian
作者单位	1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Univ Utrecht, Dept Earth Sci, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
推荐引用方式 GB/T 7714	Wu, Li,Wang, Rujian,Xiao, Wenshen,et al. Productivity-climate coupling recorded in Pleistocene sediments off Prydz Bay (East Antarctica)[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,485:260-270.
APA	Wu, Li,Wang, Rujian,Xiao, Wenshen,Ge, Shulan,Chen, Zhihua,&Krijgsman, Wout.(2017).Productivity-climate coupling recorded in Pleistocene sediments off Prydz Bay (East Antarctica).PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,485,260-270.
MLA	Wu, Li,et al."Productivity-climate coupling recorded in Pleistocene sediments off Prydz Bay (East Antarctica)".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 485(2017):260-270.