| DOI: | 10.1016/j.gloplacha.2014.08.020
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| 论文题名: | Tracking the impact of mid- to late Holocene climate change and anthropogenic activities on Lake Holzmaar using an updated Holocene chronology |
| 作者: | Prasad S.; Baier J.
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| ISSN: | 0921-8427
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| 出版年: | 2014
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| 卷: | 122 | | 起始页码: | 251
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| 结束页码: | 264
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| 语种: | 英语
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| 英文关键词: | Bayesian modelling
; Iron Age
; Lake Holzmaar
; Microfacies
; Ulmener Maar Tephra
; Varves
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| Scopus关键词: | Bayesian modelling
; Iron age
; Micro-facies
; Ulmener Maar Tephra
; Varves
; archaeology
; catchment
; climate change
; eutrophication
; geochronology
; Holocene
; human activity
; limnology
; microfacies
; numerical model
; precipitation (climatology)
; temperature effect
; Germany
; Lake Holzmaar
; Rhineland-Palatinate
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| 英文摘要: | The mid- to late Holocene interval is characterised by a highly variable climate in response to a gradual change in orbital insolation. The seasonal impact of these changes on the Eifel Maar region is not yet well documented largely due to uncertainties about the completeness of this archive ("missing varves" in the well known Lake Holzmaar) and a limited understanding of the factors (e.g. temperature, precipitation) influencing the seasonality archived within the lamination/varves. In this study we approach these challenges from a different perspective. Using detailed microfacies investigations we: (1) demonstrate that the ambiguity about the "missing varves" is related to the climate induced complex biotic and abiotic laminations that led to mis-identification of varves; (2) use a combination of detailed microfacies investigations (varve structure, seasonality of biotic and abiotic signals), lamination quality, varve counts on multiple cores, published and new radiocarbon dates to develop a continuous master chronology based on the Bayesian modelling approach. The dates of major climate, volcanic, and archaeological event(s) determined using our model are in good agreement with the independently determined ages of the same events from other archives, confirming the accuracy of our age model; (3) test the sensitivity of the seasonal proxies to the available data on mid-Holocene changes in temperature and precipitation; (4) demonstrate that the changes in lake eutrophicity are correlative with temperature changes in NW Europe and probably triggered by solar variability; and (5) show that the early Iron Age onset of eutrophication in Lake Holzmaar was climate induced and began several decades before the impact of anthropogenic activity was seen in the form of intensified detrital erosion in the catchment area. Our work has implications for understanding the impact of climate change and anthropogenic activities on limnological systems. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907821529&doi=10.1016%2fj.gloplacha.2014.08.020&partnerID=40&md5=2ed9e12a663dfeb546a18e98705281d9
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11333
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| Appears in Collections: | 全球变化的国际研究计划
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作者单位: | Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany
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| Recommended Citation: | |
Prasad S.,Baier J.. Tracking the impact of mid- to late Holocene climate change and anthropogenic activities on Lake Holzmaar using an updated Holocene chronology[J],2014-01-01,122.
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