Semi-quantitative estimates of paleo Arctic sea ice concentration based on source-specific highly branched isoprenoid alkenes: A further development of the PIP25 index
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- 作者：Lukas Smik ; Patricia Cabedo-Sanz ; Simon T. Belt ; sbelt@plymouth.ac.uk" class="auth_mail" title="E-mail the corresponding author
- 关键词：Sea ice ; Highly branched isoprenoid ; IP25 ; Alkenes ; Sterols ; Biomarker ; Arctic
- 刊名：Organic Geochemistry
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：92
- 期：Complete
- 页码：63-69
- 全文大小：1240 K
文摘
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Lipid distributions in Barents Sea sediments compared to sea ice concentration (SIC).
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Lipids are 2 highly branched isoprenoid alkenes (IP25 and HBI III) and brassicasterol.
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Good linear relationship between PIP25 and spring SIC but not summer SIC.
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Relationship of PIIIIP25 to SIC less dependent on the balance factor c than PBIP25.
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Threshold value for PIIIIP25 (0.8) may be useful proxy for summer sea ice occurrence.