| Lu Bing,Zhou Huaiyang,Wang Zipan,Lu Douding. 2001. Composition index of n-alkanes and paleoenvironmental study in sediments of the Arctic. Acta Oceanologica Sinica, (4):535－551 |
| Composition index of n-alkanes and paleoenvironmental study in sediments of the Arctic |
| Composition index of n-alkanes and paleoenvironmental study in sediments of the Arctic |
| Received:June 12, 2001 Revised:July 20, 2001 |
| DOI： |
| Key words:The Arctic n-alkanes factor analysis paleoenvironment |
| 中文关键词: The Arctic n-alkanes factor analysis paleoenvironment |
| 基金项目:This study was supported by The NKBRSF Project under contract No. G2000078500 and the First Chinese National Scientific Expedition in Arctica. |
| Author Name | Affiliation | | Lu Bing | Key Lab of Submarine Geoscience of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | Zhou Huaiyang | Key Lab of Submarine Geoscience of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | Wang Zipan | Key Lab of Submarine Geoscience of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | Lu Douding | Key Lab of Submarine Geoscience of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| Abstract: |
| This paper reports different concentration patterns of n-alkanes distribution in the sediments from the Chukchi Sea, the Bering Sea in the Arctic. Factor statistical analysis method is used for studying the source of n-alkanes and paleoenviroment. The result shows that n-alkanes is in the range of nC15~nC33 and n-alkane distribution patterns are characterized by two modes. The first mode belongs to the higher molecular with MH being nC25~nC27, CPI> 1 and with remarkable odd-even dominance.They are of terrigenous plant origin. The second one belongs to lower carbon range with MH being nC17~nC20, CPI> 1 and with indistinct odd-even dominance. Therefore they are contributed by marine biological inputs. The contribution of land origin is larger than that of marine source. Pr/Ph is lower than 1 in the investigated area, which indicates the depositional environment of reducing reaction with lower oxygen. The result of factor analysis has good agreement with composition characteristics of n-alkanes in the sediment. |
| 中文摘要: |
| This paper reports different concentration patterns of n-alkanes distribution in the sediments from the Chukchi Sea, the Bering Sea in the Arctic. Factor statistical analysis method is used for studying the source of n-alkanes and paleoenviroment. The result shows that n-alkanes is in the range of nC15~nC33 and n-alkane distribution patterns are characterized by two modes. The first mode belongs to the higher molecular with MH being nC25~nC27, CPI> 1 and with remarkable odd-even dominance.They are of terrigenous plant origin. The second one belongs to lower carbon range with MH being nC17~nC20, CPI> 1 and with indistinct odd-even dominance. Therefore they are contributed by marine biological inputs. The contribution of land origin is larger than that of marine source. Pr/Ph is lower than 1 in the investigated area, which indicates the depositional environment of reducing reaction with lower oxygen. The result of factor analysis has good agreement with composition characteristics of n-alkanes in the sediment. |
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