DOI: 10.1016/j.quascirev.2013.01.025
Scopus记录号: 2-s2.0-84874676451
论文题名: Late-Holocene diatom derived seasonal variability in hydrological conditions off Disko Bay, West Greenland
作者: Krawczyk D.W. ; Witkowski A. ; Lloyd J. ; Moros M. ; Harff J. ; Kuijpers A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 67 起始页码: 93
结束页码: 104
语种: 英语
英文关键词: Anti-phase
; Diatoms
; Hydrological conditions
; Little Ice Age
; West Greenland
Scopus关键词: Anti-phase
; Diatoms
; Hydrological condition
; Little Ice Age
; West Greenland
; Atmospheric pressure
; Cooling systems
; Oceanography
; Temperature
; Surface waters
; diatom
; fossil assemblage
; fossil record
; Holocene
; meridional circulation
; micropaleontology
; North Atlantic Oscillation
; paleoclimate
; seasonal variation
; sediment core
; water temperature
; Arctic
; Atlantic Ocean
; Atlantic Ocean (East)
; Disko Bay
; Greenland
英文摘要: A decadally resolved diatom record from a sediment core collected from Disko Bay, central West Greenland, reveals variations in hydrological conditions for the late Holocene. The diatom flora record two clear trends in surface water temperatures: a pronounced cooling of surface waters during the Medieval Climate Anomaly (MCA) and a progressive warming in surface waters during the Little Ice Age (LIA), previously identified in North Atlantic studies. Our data support the existence of a previously identified anti-phase relationship between surface water temperatures off West Greenland and climate events recorded in the north-east Atlantic. The diatom assemblages show relatively cool surface water conditions during warmer climatic intervals, e.g. 3.6-2.7 cal. ka BP, the MCA, while relatively warm surface water conditions during colder climatic periods, e.g. the Dark Ages (DA) and the LIA. The exception to this is the Roman Warm Period (RWP), which in West Greenland shows warmer surface waters and climatic conditions. Our data also show the existence of anti-phase relationship between surface and sub-surface water temperatures in Disko Bay during the interval 3.6-2.7 cal. ka BP (cooler surface with warmer subsurface waters) and towards the end of the LIA (warmer surface and cooler sub-surface waters). These anti-phases patterns are possibly linked to: 1) the local spring-summer hydrological conditions (e.g. warmer climatic intervals), such as meltwater flux from sea ice/continental ice and water stratification, and 2) large-scale ocean-climate interactions (e.g. cooler climatic intervals) within the North Atlantic Oscillation (NAO)-type climate see-saw between West Greenland and north-west Europe associated with variability in the Atlantic Meridional Overturning Circulation (AMOC). © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60671
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, University of Szczecin, Mickiewicza 18, PL-70-383 Szczecin, Poland; Department of Geography, University of Durham, South Road, Durham DH1 3LE, United Kingdom; Leibniz Institute for Baltic Sea Research, Warnemünde, Seestrasse 15, 18119 Rostock, Germany; Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
Recommended Citation:
Krawczyk D.W.,Witkowski A.,Lloyd J.,et al. Late-Holocene diatom derived seasonal variability in hydrological conditions off Disko Bay, West Greenland[J]. Quaternary Science Reviews,2013-01-01,67