DOI: 10.1002/2016GL071450
论文题名: Rapid variations in deep ocean temperature detected in the Holocene
作者: Bova S.C. ; Herbert T.D. ; Fox-Kemper B.
刊名: Geophysical Research Letters
ISSN: 0094-8349
EISSN: 1944-8080
出版年: 2016
卷: 43, 期: 23 起始页码: 12190
结束页码: 12198
语种: 英语
英文关键词: deep ocean variability
; eddy variability
; stable isotopes
Scopus关键词: Isotopes
; Anthropogenic forcing
; Benthic foraminifera
; Deep ocean
; Eastern equatorial Pacific
; eddy variability
; Sedimentary records
; Stable isotopes
; Systematic analysis
; Oceanography
; Foraminifera
英文摘要: The observational record of deep ocean variability is short, which makes it difficult to attribute the recent rise in deep ocean temperatures to anthropogenic forcing. Here we test a new proxy—the oxygen isotopic signature of individual benthic foraminifera—to detect rapid (i.e., monthly to decadal) variations in deep ocean temperature and salinity in the sedimentary record. We apply this technique at 1000 m water depth in the Eastern Equatorial Pacific during seven 200 year Holocene intervals. Variability in foraminifer δ18O over the past 200 years is below the detection limit, but δ18O signatures from two mid-Holocene intervals indicate temperature swings >2°C within 200 years. More vigorous transport between the surface and deep ocean or stronger eddy variability than that observed in the historical record are potential explanations. Distinguishing externally forced climate trends in deep ocean properties from unforced variability should be possible with systematic analysis of suitable deep sea cores. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007427992&doi=10.1002%2f2016GL071450&partnerID=40&md5=c018a3dbb05fdd80b9679bf679852374
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9312
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: Department of Earth, Environmental, and Planetary Sciences, Institute at Brown for the Study of Environment and Society, Brown University, Providence, RI, United States
Recommended Citation:
Bova S.C.,Herbert T.D.,Fox-Kemper B.. Rapid variations in deep ocean temperature detected in the Holocene[J]. Geophysical Research Letters,2016-01-01,43(23).