SCSIO OpenIR  > 中科院边缘海地质重点实验室
Using Time-Series Videos to Quantify Methane Bubbles Flux from Natural Cold Seeps in the South China Sea
Di, Pengfei1,2,3; Feng, Dong1,4; Tao, Jun5; Chen, Duofu1,4
2020
Source PublicationMINERALS
ISSN2075-163X
Volume10Issue:3Pages:216
AbstractNatural 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.
DepartmentOMG
Keywordcold seep bubbles gas flux release rate South China Sea autonomous video
DOI10.3390/min10030216
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/18571
Collection中科院边缘海地质重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China
3.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511481, Peoples R China
5.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China
6.Minist Nat Resources, MNR Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 510075, Peoples R China
Recommended Citation
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.
Files in This Item:
File Name/Size DocType Version Access License
Using Time-Series Vi(2695KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.