DOI: 10.5194/cp-10-51-2014
Scopus记录号: 2-s2.0-84892690862
论文题名: Reconstruction of Atlantic water variability during the Holocene in the western Barents Sea
作者: Groot D.E. ; Aagaard-Sørensen S. ; Husum K.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 1 起始页码: 51
结束页码: 62
语种: 英语
Scopus关键词: benthic foraminifera
; bottom water
; climate variation
; cooling
; Holocene
; inflow
; insolation
; oxygen isotope
; paleoclimate
; periodicity
; reconstruction
; sea ice
; sedimentology
; transfer function
; water flow
; water mass
; Arctic Ocean
; Atlantic Ocean
; Barents Sea
英文摘要: The gravity core JM09-KA11-GC from 345 m water depth on the western Barents Sea margin was investigated for down-core distribution patterns of benthic Foraminifera, stable isotopes, and sedimentological parameters in order to reconstruct the flow of Atlantic water during the Holocene. The core site is located below the Atlantic water masses flowing into the Arctic Ocean and close to the Arctic front. The results show continuous presence of Atlantic water at the margin throughout the Holocene. During the early Holocene, (11 500-9800 cal yr BP), bottom water temperatures as calculated by transfer functions rose by 1.5 C, likely due to the increased inflow of Atlantic water, although sea ice was still present at this time. The transition to the mid-Holocene is characterized by a local shift in current regime, resulting in a ceased supply of fine-grained material to the core location. Throughout the mid-Holocene the δ18O values indicate a slight cooling, thereby following changes in insolation. In the last 1500 yr, inflow of Atlantic water increased but was interrupted by periods of increased influence of Arctic water causing periodically colder and more unstable conditions. © 2014 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49329
Appears in Collections: 气候变化与战略
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Recommended Citation:
Groot D.E.,Aagaard-Sørensen S.,Husum K.. Reconstruction of Atlantic water variability during the Holocene in the western Barents Sea[J]. Climate of the Past,2014-01-01,10(1)