Using Time-Series Videos to Quantify Methane Bubbles Flux from Natural Cold Seeps in the South China Sea
文献类型：期刊论文
| 作者 | Di, Pengfei3,4,5; Feng, Dong1,3; Tao, Jun6; Chen, Duofu1,3 |
| 刊名 | MINERALS
 |
| 出版日期 | 2020 |
| 卷号 | 10期号:3页码:216 |
| 关键词 | cold seep bubbles gas flux release rate South China Sea autonomous video |
| ISSN号 | 2075-163X |
| DOI | 10.3390/min10030216 |
| 英文摘要 | Natural cold seeps are an important source of methane and other greenhouse gases to the ocean and atmosphere in the marine environment. Accurate quantification of methane bubble fluxes from cold seeps is vital for evaluating their influence on the global methane budget and climate change. We quantified the flux of gas bubbles released from two natural cold seep sites in the South China Sea: one seep vent in the Haima cold seeps (1400 m depth) and three seep vents at Site F (1200 m depth). We determined bubble diameter, size distribution, and bubble release rate using image processing techniques and a semiautomatic bubble-counting algorithm. The bubble size distributions fit well to log-normal distribution, with median bubble diameters between 2.54 mm and 6.17 mm. The average bubble diameters and release rates (4.8-26.1 bubbles s(-1)) in Site F was lower than that in Haima cold seeps (22.6 bubbles s(-1)), which may be attributed to a variety of factors such as the nature of the gas reservoir, hydrostatic pressure, migration pathways in the sediments, and pore size. The methane fluxes emitted at Haima cold seeps (12.6 L h(-1)) and at Site F (4.9 L h(-1)) indicate that the Haima and Site F cold seeps in the South China Sea may be a source of methane to the ocean. However, temporal variations in the bubble release rate and the geochemical characteristics of the seeps were not constrained in this study due to the short observational time interval. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18571]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511481, Peoples R China 2.Minist Nat Resources, MNR Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 510075, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China 5.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 6.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di, Pengfei,Feng, Dong,Tao, Jun,et al. Using Time-Series Videos to Quantify Methane Bubbles Flux from Natural Cold Seeps in the South China Sea[J]. MINERALS,2020,10(3):216. |
| APA | Di, Pengfei,Feng, Dong,Tao, Jun,&Chen, Duofu.(2020).Using Time-Series Videos to Quantify Methane Bubbles Flux from Natural Cold Seeps in the South China Sea.MINERALS,10(3),216. |
| MLA | Di, Pengfei,et al."Using Time-Series Videos to Quantify Methane Bubbles Flux from Natural Cold Seeps in the South China Sea".MINERALS 10.3(2020):216. |
入库方式： OAI收割
来源：南海海洋研究所
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