globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.05.044
论文题名:
Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events
作者: Menzel P.; Gaye B.; Mishra P.K.; Anoop A.; Basavaiah N.; Marwan N.; Plessen B.; Prasad S.; Riedel N.; Stebich M.; Wiesner M.G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 410
起始页码: 164
结束页码: 178
语种: 英语
英文关键词: Amino acid ; Climate reconstruction ; Holocene ; Indian monsoon ; Lake sediment ; Stable carbon isotope
英文摘要: We present the results of biogeochemical and mineralogical analyses on a sediment core that covers the Holocene sedimentation history of the climatically sensitive, closed, saline, and alkaline Lonar Lake in the core monsoon zone in central India. We compare our results of C/N ratios, stable carbon and nitrogen isotopes, grain-size, as well as amino acid derived degradation proxies with climatically sensitive proxies of other records from South Asia and the North Atlantic region. The comparison reveals some more or less contemporaneous climate shifts. At Lonar Lake, a general long term climate transition from wet conditions during the early Holocene to drier conditions during the late Holocene, delineating the insolation curve, can be reconstructed. In addition to the previously identified periods of prolonged drought during 4.6-3.9 and 2.0-0.6 cal ka that have been attributed to temperature changes in the Indo Pacific Warm Pool, several additional phases of shorter term climate alteration superimposed upon the general climate trend can be identified. These correlate with cold phases in the North Atlantic region. The most pronounced climate deteriorations indicated by our data occurred during 6.2-5.2, 4.6-3.9, and 2.0-0.6 cal ka BP. The strong dry phase between 4.6 and 3.9. cal. ka BP at Lonar Lake corroborates the hypothesis that severe climate deterioration contributed to the decline of the Indus Civilisation about 3.9 ka BP. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69267
Appears in Collections:过去全球变化的重建

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作者单位: Institute of Geology, University of Hamburg, Bundesstr. 55, Hamburg, Germany; Helmholtz-Centre Potsdam, German Research Centre for Geosciences (GFZ), Telegrafenberg, Potsdam, Germany; Indian Institute of Geomagnetism, Plot 5, Sector 18, New Panvel, Navi Mumbai, India; Potsdam-Institute for Climate Impact Research, Telegrafenberg A 51, Potsdam, Germany; Institute of Earth- and Environmental Science, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam-Golm, Germany; Senckenberg Research Station of Quaternary Palaeontology, Am Jakobskirchhof 4, Weimar, Germany; Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, India

Recommended Citation:
Menzel P.,Gaye B.,Mishra P.K.,et al. Linking Holocene drying trends from Lonar Lake in monsoonal central India to North Atlantic cooling events[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,410
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