DOI: 10.1002/2014GL059575
论文题名: Reconstruction of Pacific Ocean bottom water salinity during the Last Glacial Maximum
作者: Insua T.L. ; Spivack A.J. ; Graham D. ; D'Hondt S. ; Moran K.
刊名: Geophysical Research Letters
ISSN: 0094-10158
EISSN: 1944-9889
出版年: 2014
卷: 41, 期: 8 起始页码: 2914
结束页码: 2920
语种: 英语
英文关键词: Last Glacial Maximum
; Pacific Ocean
; paleoceanography
; salinity
Scopus关键词: Chlorine compounds
; Glacial geology
; Sea level
; Chloride concentrations
; Expected values
; Last Glacial Maximum
; North Pacific Ocean
; Ocean circulation
; Pacific ocean
; Paleoceanography
; salinity
; Geographical regions
; bottom water
; chloride
; Last Glacial Maximum
; paleoceanography
; porewater
; reconstruction
; salinity
; sediment analysis
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Pacific Ocean (North)
; Pacific Ocean (South)
英文摘要: Knowledge of salinity in the deep ocean is important for understanding past ocean circulation and climate. Based on sedimentary pore fluid chloride measurements of a single Pacific site, Adkins et al. () suggested that, during the Last Glacial Maximum (LGM), the Pacific deep bottom water was saltier than expected based on lower sea level alone. Here we present high-resolution salinity profiles from five sites in the South, Equatorial, and North Pacific Ocean. Our study greatly constrains understanding of LGM salinity in the Pacific Ocean. Our results show that LGM chloride concentrations of deep Pacific bottom water were 4.09±0.4% greater than today's values. Pacific Ocean bottom water salinity was also indistinguishable from being homogeneous across the wide range of latitudes studied here. These LGM salinity reconstructions are on average slightly higher (~1.4 to 1% higher) than expected from sea level of the time, which is generally inferred to have been ~120 to ~135 m lower than today. Key Points LGM salinity of Pacific bottom water was 4.09 ± 0.4% greater than today The salinity of bottom waters was homogeneous across latitudes studied Based on sea level, salinity reconstructions were higher than expected values ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898714051&doi=10.1002%2f2014GL059575&partnerID=40&md5=6a84cd3cf77401e49c96b54348ff557c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7422
Appears in Collections: 气候减缓与适应
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作者单位: Ocean Networks Canada, University of Victoria, Victoria, BC, Canada
Recommended Citation:
Insua T.L.,Spivack A.J.,Graham D.,et al. Reconstruction of Pacific Ocean bottom water salinity during the Last Glacial Maximum[J]. Geophysical Research Letters,2014-01-01,41(8).