Reconstructing lake evaporation history and the isotopic composition of precipitation by a coupled 未18O-未2H biomarker approach
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- 作者：Johannes Heppa ; 1 ; johannes-hepp@gmx.de" class="auth_mail" title="E-mail the corresponding author ; Mario Tuthorna ; 1 ; Roland Zechb ; Ines Mü ; glerc ; d ; Frank Schlü ; tze ; f ; Wolfgang Zecha ; Michael Zecha ; g
- 关键词：Biomarkers ; n-Alkanes ; Sugars ; Deuterium-excess ; Evaporation ; Lake desiccation
- 刊名：Journal of Hydrology
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：529
- 期：part_P2
- 页码：622-631
- 全文大小：920 K
文摘
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未2H biomarker record was established for a lake sediment archive.
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16 ka 未18Osugar and 未2Hn-alkane biomarker records follow similar trends.
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未18O/未2H differences are explained by evaporative isotopic enrichment of lake water.
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Reconstructed d-excess of lake water serves as proxy for evaporative losses.
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A coupled 未18O–未2H approach allows a model-based reconstruction of 未18O/未2Hprec.