globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.02.017
Scopus记录号: 2-s2.0-85014134791
论文题名:
Holocene multi-proxy environmental reconstruction from lake Hakluytvatnet, Amsterdamøya Island, Svalbard (79.5°N)
作者: Gjerde M.; Bakke J.; D'Andrea W.J.; Balascio N.L.; Bradley R.S.; Vasskog K.; Ólafsdóttir S.; Røthe T.O.; Perren B.B.; Hormes A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
语种: 英语
英文关键词: Arctic ocean ; Holocene ; Lake sediments ; Multi-proxy analyses ; Neoglacial ; Paleolimnology ; Runoff ; Sedimentology, lakes, lagoons & swamps ; Svalbard
Scopus关键词: Catchments ; Paleolimnology ; Runoff ; Sea ice ; Sediments ; Arctic ocean ; Holocenes ; Lake sediments ; Multi-proxy analysis ; Neoglacial ; Svalbard ; Lakes
英文摘要: High resolution proxy records of past climate are sparse in the Arctic due to low organic production that restricts the use of radiocarbon dating and challenging logistics that make data collection difficult. Here, we present a new lake record from lake Hakluytvatnet at Amsterdamøya island (79.5°N), the northwesternmost island on Svalbard. Multi-proxy analyses of lake sediments in combination with geomorphological mapping reveal large environmental shifts that have taken place at Amsterdamøya during the Holocene. A robust chronology has been established for the lake sediment core through 28 AMS radiocarbon ages, and this gives an exceptionally well-constrained age control for a lake at this latitude. The Holocene was a period with large changes in the Hakluytvatnet catchment, and the onset of the Neoglacial (ca. 5 ka) marks the start of modern-day conditions in the catchment. The Neoglacial is characterized by fluctuations in the minerogenic input to the lake as well as internal productivity, and we suggest that these fluctuations are driven by atmospherically forced precipitation changes as well as sea ice extent modulating the amount of moisture that can reach Hakluytvatnet. © 2017 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59381
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作者单位: Department of Earth Science and Bjerknes Centre for Climate Research, University of Bergen, Allégaten 41, 5007, Bergen, Norway; The University Centre in Svalbard, 9171, Longyearbyen, Norway; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA; Department of Geology, College of William and Mary, Williamsburg, VA, USA; Department of Geosciences, University of Massachusetts, Amherst, MA, 01003, USA; British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK; Department of Earth Sciences, University of Gothenburg, SE-405 30, Gothenburg, Sweden

Recommended Citation:
Gjerde M.,Bakke J.,D'Andrea W.J.,et al. Holocene multi-proxy environmental reconstruction from lake Hakluytvatnet, Amsterdamøya Island, Svalbard (79.5°N)[J]. Quaternary Science Reviews,2016-01-01
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