globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2013.10.026
Scopus记录号: 2-s2.0-84890099294
论文题名:
Event layers in the Japanese Lake Suigetsu 'SG06' sediment core: Description, interpretation and climatic implications
作者: Schlolaut G.; Brauer A.; Marshall M.H.; Nakagawa T.; Staff R.A.; Bronk Ramsey C.; Lamb H.F.; Bryant C.L.; Naumann R.; Dulski P.; Brock F.; Yokoyama Y.; Tada R.; Haraguchi T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 83
起始页码: 157
结束页码: 170
语种: 英语
英文关键词: μXRF ; Earthquakes ; East Asia ; Floods ; Lacustrine ; LGM ; Microfacies ; Microscopy ; Typhoons
Scopus关键词: East Asia ; Extreme precipitation events ; Lacustrine ; LGM ; Micro-facies ; Periodic variation ; Sedimentation process ; Triggering mechanism ; Climate change ; Earthquakes ; Glacial geology ; Hurricanes ; Lakes ; Microscopic examination ; Precipitation (meteorology) ; Spectrum analysis ; Storms ; Floods ; cyclicity ; depositional environment ; earthquake ; erosion rate ; flood ; Heinrich event ; lacustrine deposit ; microfacies ; paleoclimate ; sediment core ; slope failure ; typhoon ; Chubu ; Fukui ; Honshu ; Japan ; Lake Suigetsu
英文摘要: Event layers in lake sediments are indicators of past extreme events, mostly the results of floods or earthquakes. Detailed characterisation of the layers allows the discrimination of the sedimentation processes involved, such as surface runoff, landslides or subaqueous slope failures. These processes can then be interpreted in terms of their triggering mechanisms. Here we present a 40ka event layer chronology from Lake Suigetsu, Japan. The event layers were characterised using a multi-proxy approach, employing light microscopy and μXRF for microfacies analysis. The vast majority of event layers in Lake Suigetsu was produced by flood events (362 out of 369), allowing the construction of the first long-term, quantitative (with respect to recurrence) and well dated flood chronology from the region. The flood layer frequency shows a high variability over the last 40ka, and it appears that extreme precipitation events were decoupled from the average long-term precipitation. For instance, the flood layer frequency is highest in the Glacial at around 25ka BP, at which time Japan was experiencing a generally cold and dry climate. Other cold episodes, such as Heinrich Event 1 or the Late Glacial stadial, show a low flood layer frequency. Both observations together exclude a simple, straightforward relationship with average precipitation and temperature. We argue that, especially during Glacial times, changes in typhoon genesis/typhoon tracks are the most likely control on the flood layer frequency, rather than changes in the monsoon front or snow melts. Spectral analysis of the flood chronology revealed periodic variations on centennial and millennial time scales, with 220yr, 450yr and a 2000yr cyclicity most pronounced. However, the flood layer frequency appears to have not only been influenced by climate changes, but also by changes in erosion rates due to, for instance, earthquakes.© 2013 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60409
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作者单位: German Research Centre for Geosciences (GFZ), Section 5.2: Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany; Institute of Geography and Earth Sciences, Aberystwyth University, SY23 3DB, United Kingdom; Department of Geography, University of Newcastle, Newcastle-upon-Tyne NE1 7RU, United Kingdom; Oxford Radiocarbon Accelerator Unit (ORAU), Research Laboratory for Archaeology and the History of Art (RLAHA), University of Oxford, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom; German Research Centre for Geosciences (GFZ), Section 4.2: Inorganic and Isotope Geochemistry, Telegrafenberg, 14473 Potsdam, Germany; Department of Earth and Planetary Sciences, Faculty of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Ocean Research Institute, University of Tokyo, 1-15-1 Minami-dai, Nakano-ku, Tokyo 164-8639, Japan; Department of Geosciences, Osaka City University, Sugimoto 3-3-138, Sumiyoshi, Osaka 558-8585, Japan

Recommended Citation:
Schlolaut G.,Brauer A.,Marshall M.H.,et al. Event layers in the Japanese Lake Suigetsu 'SG06' sediment core: Description, interpretation and climatic implications[J]. Quaternary Science Reviews,2014-01-01,83
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