DOI: 10.1016/j.quascirev.2013.05.003
Scopus记录号: 2-s2.0-84879525890
论文题名: Numerical analyses of a multi-proxy data set from a distal glacier-fed lake, Sørsendalsvatn, western Norway
作者: Bakke J. ; Trachsel M. ; Kvisvik B.C. ; Nesje A. ; Lyså A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 73 起始页码: 182
结束页码: 195
语种: 英语
英文关键词: Glacier variability
; Holocene
; Lake sediments
; Norway
; Numerical analyses
; XRF
Scopus关键词: Geochemical data
; Glacial activity
; Holocenes
; Lake sediments
; Norway
; Sediment properties
; Terrestrial systems
; XRF
; Catchments
; Geochronology
; Glacial geology
; Lakes
; Numerical analysis
; Principal component analysis
; Sediments
; data set
; deglaciation
; geochronology
; glacial environment
; Holocene
; Little Ice Age
; mathematical analysis
; principal component analysis
; proxy climate record
; radiocarbon dating
; statistical analysis
; Norway
英文摘要: Here we present a Holocene record of glacier variability as documented through physical sediment properties analysed on sediments from the distal glacier-fed Lake Nedre (Nedre=Lower) Sørsendalsvatn (918ma.s.l.), located 35km inland from the coast in western Norway. We emphasise comparing different sediment parameters by means of statistical methods as well as integrating chronological uncertainties along with uncertainties of reconstructed glacier variability. A multi-proxy data set consisting of sedimentological, physical, and geochemical data shows one main process, as extracted by means of principal component analysis (88% of the variance explained by the first PC), driving sediment variability in Nedre Sørsendalsvatn. The common signal extracted from the sediment data is indicative of glacial activity in the catchment and is interpreted to vary in concert with the changing glacier equilibrium-line altitude. The reconstruction of former glacier activity is in accordance with glacier variability reconstructed from other sites in western Norway, including the termination of the deglaciation at approximately 10,000calyrBP, the 8.2kaBP (Finse) event, the Holocene thermal optimum between ~8000 and 5500calyrBP, and the onset of the Neoglacial at 5500calyrBP. The largest glacial extent during the Neoglacial time period took place during the 'Little Ice Age'. The combined radiocarbon chronologies from three different sediment cores provide insight into the duration of the "8.2ka event" in the terrestrial system. The maximum glacier activity at approximately 8.2calBP is the culmination of a glacier advance that began around 9calBP and accelerated at 8.4calBP. The glacier advance ended abruptly at 8.0calBP. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60593
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Science, University of Bergen, Allégaten 41, 5007 Bergen, Norway; Bjerknes Centre for Climate Research, Uni Research, Allégaten 55, 5007 Bergen, Norway; Department of Geography, University of Bergen, Fosswinckelsgate 6, 5020 Bergen, Norway; Geological Survey of Norway, Leiv Eirikssons vei 39, 7040 Trondheim, Norway; Department of Biology, University of Bergen, Thormøhlensgate 53a, 5006 Bergen, Norway
Recommended Citation:
Bakke J.,Trachsel M.,Kvisvik B.C.,et al. Numerical analyses of a multi-proxy data set from a distal glacier-fed lake, Sørsendalsvatn, western Norway[J]. Quaternary Science Reviews,2013-01-01,73