DOI: 10.1002/2014GL061665
论文题名: Dynamic morphology of gas hydrate on a methane bubble in water: Observations and new insights for hydrate film models
作者: Warzinski R.P. ; Lynn R. ; Haljasmaa I. ; Leifer I. ; Shaffer F. ; Anderson B.J. ; Levine J.S.
刊名: Geophysical Research Letters
ISSN: 0094-9743
EISSN: 1944-9474
出版年: 2014
卷: 41, 期: 19 起始页码: 6841
结束页码: 6847
语种: 英语
英文关键词: bubble hydrodynamics
; hydrate film modeling
; hydrate morphology
; hydrocarbon transport
; marine seeps
; ocean/atmospheric gas partitioning
Scopus关键词: Budget control
; Dissolution
; Fluid dynamics
; Gases
; Greenhouse gases
; Hydration
; Hydrocarbons
; Hydrodynamics
; Methane
; Morphology
; Sea ice
; Controlling mechanism
; Dissolution rates
; Hydrate film
; Hydrate formation
; Linear relationships
; Marine seeps
; Morphological changes
; Ocean/atmospheric gas partitioning
; Gas hydrates
; bubble
; dissolution
; film
; gas hydrate
; methane
; seawater
; water column
英文摘要: Predicting the fate of subsea hydrocarbon gases escaping into seawater is complicated by potential formation of hydrate on rising bubbles that can enhance their survival in the water column, allowing gas to reach shallower depths and the atmosphere. The precise nature and influence of hydrate coatings on bubble hydrodynamics and dissolution is largely unknown. Here we present high-definition, experimental observations of complex surficial mechanisms governing methane bubble hydrate formation and dissociation during transit of a simulated oceanic water column that reveal a temporal progression of deep-sea controlling mechanisms. Synergistic feedbacks between bubble hydrodynamics, hydrate morphology, and coverage characteristics were discovered. Morphological changes on the bubble surface appear analogous to macroscale, sea ice processes, presenting new mechanistic insights. An inverse linear relationship between hydrate coverage and bubble dissolution rate is indicated. Understanding and incorporating these phenomena into bubble and bubble plume models will be necessary to accurately predict global greenhouse gas budgets for warming ocean scenarios and hydrocarbon transport from anthropogenic or natural deep-sea eruptions. Key Points Complex surface mechanisms govern hydrate formation and dissociation on bubblesSurface hydrate morphology and coverage characteristics linked to hydrodynamicsNew mechanistic insights may have important implications for bubble plume models ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911380099&doi=10.1002%2f2014GL061665&partnerID=40&md5=da0f6db45c5617f2546891c66334d21a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7007
Appears in Collections: 气候减缓与适应
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作者单位: National Energy Technology Laboratory, U.S. Department of Energy, Pittsburgh, PA, United States
Recommended Citation:
Warzinski R.P.,Lynn R.,Haljasmaa I.,et al. Dynamic morphology of gas hydrate on a methane bubble in water: Observations and new insights for hydrate film models[J]. Geophysical Research Letters,2014-01-01,41(19).