globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.02.031
论文题名:
Carbonate isotopes from high altitude Tso Moriri Lake (NW Himalayas) provide clues to late glacial and Holocene moisture source and atmospheric circulation changes
作者: Mishra P.K.; Prasad S.; Anoop A.; Plessen B.; Jehangir A.; Gaye B.; Menzel P.; Weise S.M.; Yousuf A.R.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 425
起始页码: 76
结束页码: 83
语种: 英语
英文关键词: Carbonates ; Holocene ; Indian summer monsoon ; Isotopes ; Tso Moriri Lake
英文摘要: High resolution isotopic (δ18O and δ13C) investigations on endogenic carbonates (calcite/aragonite) from Tso Moriri Lake, NW Himalaya show dramatic fluctuations during the late glacial and the early Holocene, and a persistent enrichment trend during the late Holocene. Changes in this lake are largely governed by the [input (meltwater+monsoon precipitation)/evaporation] (I/E) ratio, also reflected in changes in the carbonate mineralogy with aragonite being formed during periods of lowest I/E. Using new isotopic data on endogenic carbonates in combination with the available data on geochemistry, mineralogy, and reconstructed mean annual precipitation, we demonstrate that the late glacial and early Holocene carbonate δ18O variability resulted from fluctuating Indian summer monsoon (ISM) precipitation in NW Himalaya. This region experienced increasing ISM precipitation between ca. 13.1 and 11.7calka and highest ISM precipitation during the early Holocene (11.2-8.5calka). However, during the late Holocene, evaporation was the dominant control on the carbonate δ18O. Regional comparison of reconstructed hydrological changes from Tso Moriri Lake with other archives from the Asian summer monsoon and westerlies domain shows that the intensified westerly influence that resulted in higher lake levels (after 8calka) in central Asia was not strongly felt in NW Himalaya. © 2015 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/68978
Appears in Collections:过去全球变化的重建

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作者单位: Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany; Institute for Earth- and Environmental Science, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, Germany; Indian Institute of Science Education and Research, Kolkata, India; Limnology and Fisheries Laboratory, Centre of Research for Development, University of Kashmir, India; Universität Hamburg, Institute of Biogeochemistry and Marine Chemistry, Hamburg, Germany; UFZ Helmholtz Centre for Environmental Research, Dept. Catchment Hydrology, Halle, Germany

Recommended Citation:
Mishra P.K.,Prasad S.,Anoop A.,et al. Carbonate isotopes from high altitude Tso Moriri Lake (NW Himalayas) provide clues to late glacial and Holocene moisture source and atmospheric circulation changes[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,425
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