长链烯酮及U<sub>37</sub><sup>k</sup>值在北极海洋古温度的应用研究

卢冰; 陈荣华; 王自磐; 陈建芳; 刘镇盛

长链烯酮及U₃₇^k值在北极海洋古温度的应用研究

国家海洋局海底科学重点实验室, 国家海洋局第二海洋研究所, 浙江, 杭州, 310012

基金项目: 中国首次北极科学考察资助项目;国家重点基础研究发展规划资助项目(G2000078503)

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出版历程
- 收稿日期: 2000-11-21
- 修回日期: 2001-03-29

Long-chain alkenones and their application study on the paleo-temperature of U₃₇^k values in the Arctic Ocean

Key Lab of Submarine Geoscience, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 在北极楚科奇海和白令海表层沉积物中检出长链烯酮化合物,研究结果表明楚科奇海和白令海沉积物中长链烯酮以C_37:3甲基酮占优势,C₃₇～C₃₉不饱和烯酮丰度变化顺序为C₃₇>C₃₈>C₃₉.根据∑C₃₇/∑C₃₈比值,所检出的长链烯酮母质生物主要是颗石藻(Emiliania huxleyi).应用U₃₇^k和U₃₇^k'标准校正关系式估算了表层海水古温度,其中U₃₇^k'估算值为4.147～5.706℃(平均为5.092℃).
- 北极 /
- 长链烯酮 /
- U₃₇^k /
- 古温度
Abstract: Long-chain alkenone compounds have been first detected in surface sediments from the Chukchi Sea and the Bering Sea in the Arctic.The result shows that C_37:3 methy alkenones predominate in the Arctic.Abundances of C₃₇～C₃₉ methy and ethyl alkenones change in or der of C₃₇>C₃₈>C₃₉.The ratio between total abundances of C₃₇ and C₃₈ alkenone(∑C₃₇/∑C₃₈) may indicate the production ratio of alkenones derived from the coceolithophrid (Emiliania huxleyi).Calibration of alkenone unsaturation ratios(U₃₇^k and U₃₇^k') is used to estimate paleotemperature,U₃₇^k-T is used to the indication of SST range from 4.147 to 5.706℃ (average value is 5.092℃).
- Arctic /
- long-chain alkenone /
- U₃₇^k /
- paleotemperature

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参考文献(31)

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