DOI: 10.1002/2015GL063089
论文题名: Tracing the strength of the southwest monsoon using boron isotopes in the eastern Arabian Sea
作者: Naik S.S. ; Divakar Naidu P. ; Foster G.L. ; Martínez-Botí M.A.
刊名: Geophysical Research Letters
ISSN: 0094-8923
EISSN: 1944-8654
出版年: 2015
卷: 42, 期: 5 起始页码: 1450
结束页码: 1458
语种: 英语
英文关键词: Arabian Sea
; boron isotopes
; Globigerinoides ruber
; monsoon
; ΔpCO2
Scopus关键词: Boron
; Glacial geology
; Isotopes
; Arabian sea
; Biological productivity
; Boron isotopes
; Eastern Arabian Sea
; Globigerinoides ruber
; Last Glacial Maximum
; Monsoon
; Planktic foraminifera species
; Atmospheric thermodynamics
; biological production
; boron isotope
; carbon dioxide
; Last Glacial Maximum
; monsoon
; planktonic foraminifera
; reconstruction
; sediment core
; Arabian Sea
; Indian Ocean
; Foraminifera
; Globigerinoides ruber
英文摘要: Here we present the first boron isotope-based pCO2 sw (pCO2 of seawater) reconstruction from the eastern Arabian Sea using the planktic foraminifera species Globigerinoides ruber. Our results from sediment core AAS9/21 show that pCO2 sw varied between ~160 and 300 μatm during the last 23 kyr. The ΔpCO2, the sea-air pCO2 difference, is relatively small during the last glacial maximum and becomes more negative toward the Holocene, with the exception of a significant excess during the last deglaciation centered on the Bølling-Ållerød. Throughout the record, ΔpCO2 is predominantly negative, probably as a result of enhanced biological productivity (and higher nutrient and carbon utilization) during the southwest monsoon. A reduction in ΔpCO2 during the last glacial maximum is therefore consistent with a reduction in the strength of this monsoon system. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925864097&doi=10.1002%2f2015GL063089&partnerID=40&md5=5ce4dfc3185e5a5bca0a4ce73337ce6f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8539
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: CSIR-National Institute of Oceanography, India
Recommended Citation:
Naik S.S.,Divakar Naidu P.,Foster G.L.,et al. Tracing the strength of the southwest monsoon using boron isotopes in the eastern Arabian Sea[J]. Geophysical Research Letters,2015-01-01,42(5).