西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

夏新宇; 王先彬

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

夏新宇, 王先彬

文章导航 > 沉积学报 > 1996 > 14(4): 45-49

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

引用本文:

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

Xia Xinyu, Wang Xianbin. Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean[J]. Acta Sedimentologica Sinica, 1996, 14(4): 45-49.

Citation:

Xia Xinyu, Wang Xianbin. Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean[J]. Acta Sedimentologica Sinica, 1996, 14(4): 45-49.

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

引用本文:

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

Citation:

西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

详细信息

作者简介:
夏新宇,男,27岁,博士研究生,地球化学

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文章访问数: 440
HTML全文浏览量: 3
PDF下载量: 381
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Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000

摘要

摘要: 对西太平洋上层海水溶解甲烷浓度的研究结果表明，该海域海水甲烷相对于大气甲烷是强烈过饱和的。甲烷浓度及碳同位素组成特征表明这部分甲烷为生物成因。该海域海－气交换过程中甲烷通量在０．７～１０．４ｎｍｏｌｍ^－２ｓ^－１，明显高于其它开放海域。
- 西太平洋 /
- 甲烷 /
- 浓度 /
- 碳同位素
Abstract: The oceans are proved to be a source for atomospheric methane, while in different sea area, the concentration of methane dissolved in seawater and the methane flux injected ints the atmosphere from the ocean surface vary greatly. In this study, the concentration and carbon isotopic composition of methane dissolved in the upper seawater of west Pacific Ocean were analysed, the methone evasion flux in this area was computed, additionally, the source of marine methane was also disscassed according to its carbon isotopic characteristics. The reslts of this study show that marine dissolved in the upper seawater in this region is extremly over saturated, while there are great disparities among the sorface methane concentrations in different locations, the values of which vary from 13 nmol/L to 169mol/L, methane concentration of the surface water are higher in the open sea zone than in the near shore zone, which is different from the formerly studied area; mathane dissolved in the deeper part of the uppor water (200 to 300 m), is more than that dissolved in the shallower part (0 to 100 m). Carbon isotopic composition pattern of methane, ethane and propane proves the biogenic formation of these light hydrocarbons dissolved in the upper sea water. Flux of methane across the seawater-atmosphere interface varies between 0.7 and 10.4 nmol ^－１m in the studied area, which is considerably high compared with the values of other open seas, while our results still proved that oceans are not animportant source for methane.
- west pacific ocean /
- methane /
- concentration /
- carbon isotope

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参考文献(1)

[1]

(1) Steele L P, E J Dlugokencky, et al. Slowing down of the global accumulation of atmosphere methane during the1980s. Nature, 1992, 358 :313-316.

(2) Lambert G, et al. Reevaluation of the oceanic flux of methane: uncertainties and long term variations Gerard Lam-bert and Sabine Schmidt. Chemosphere, 1993, 26 :576-589.

(3) Wiesenburg D A, et al. Equilibrium Solubilities of Methane, Carbon Monoxide, and Hydrogen in water and SeaWater Denis A Wiessenburg and No rman L. Guinasso, Jr, J. Chem. Eng. Data, 1979, 24 :356-360.

(4) Bange H W, U. H. Bartell, et al. Methane in the Baltic and North Seas and a reassessment of the marine emissiorsof methane. Global Biogeochem, Cycles, 1994, 8 :465-480.

(5) 刘光鼎主编. 中国海区及邻域地质— 地球物理系列图· 地形图. 地质出版社,北京, 1992.

(6) Marty D G. Methangenic bacteria in searvater Danielle. 1993, 38 :452-456.

(7) Scranton M I, P G Brewer, et al. Occurrence of methane in the near-surface waters of the western substropicalNo rth-Atlantic. 1977, 24 :127-138.

(8) Fung I, J. John, et al. Three- Dimensinal Model Synthesis of the Global Methane Cycle. JGR, 1991, 96 :13033 —13065.

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

作者简介:
夏新宇,男,27岁,博士研究生,地球化学

收稿日期: 1996-02-10

关键词:

西太平洋 /

甲烷 /

浓度 /

碳同位素

摘要: 对西太平洋上层海水溶解甲烷浓度的研究结果表明，该海域海水甲烷相对于大气甲烷是强烈过饱和的。甲烷浓度及碳同位素组成特征表明这部分甲烷为生物成因。该海域海－气交换过程中甲烷通量在０．７～１０．４ｎｍｏｌｍ^－２ｓ^－１，明显高于其它开放海域。

English Abstract

Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000

Received Date: 1996-02-10

Keywords:

Abstract: The oceans are proved to be a source for atomospheric methane, while in different sea area, the concentration of methane dissolved in seawater and the methane flux injected ints the atmosphere from the ocean surface vary greatly. In this study, the concentration and carbon isotopic composition of methane dissolved in the upper seawater of west Pacific Ocean were analysed, the methone evasion flux in this area was computed, additionally, the source of marine methane was also disscassed according to its carbon isotopic characteristics. The reslts of this study show that marine dissolved in the upper seawater in this region is extremly over saturated, while there are great disparities among the sorface methane concentrations in different locations, the values of which vary from 13 nmol/L to 169mol/L, methane concentration of the surface water are higher in the open sea zone than in the near shore zone, which is different from the formerly studied area; mathane dissolved in the deeper part of the uppor water (200 to 300 m), is more than that dissolved in the shallower part (0 to 100 m). Carbon isotopic composition pattern of methane, ethane and propane proves the biogenic formation of these light hydrocarbons dissolved in the upper sea water. Flux of methane across the seawater-atmosphere interface varies between 0.7 and 10.4 nmol ^－１m in the studied area, which is considerably high compared with the values of other open seas, while our results still proved that oceans are not animportant source for methane.

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

引用本文:

夏新宇, 王先彬. 西太平洋上层海水溶解甲烷浓度及碳同位素特征研究[J]. 沉积学报, 1996, 14(4): 45-49.

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

作者简介:
夏新宇,男,27岁,博士研究生,地球化学

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Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

作者简介:
夏新宇,男,27岁,博士研究生,地球化学

English Abstract

Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

作者简介: 夏新宇,男,27岁,博士研究生,地球化学

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Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

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西太平洋上层海水溶解甲烷浓度及碳同位素特征研究

中国科学院兰州地质研究所气体地球化学国家重点实验室 兰州 730000

作者简介: 夏新宇,男,27岁,博士研究生,地球化学

English Abstract

Study on the Concentration and Carbon Isotopic Composition of Methane Dissolved in the Upper Seawater of West Pacific Ocean

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000

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目录

友情链接

期刊在线

联系我们

作者简介:
夏新宇,男,27岁,博士研究生,地球化学

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

作者简介:
夏新宇,男,27岁,博士研究生,地球化学