| DOI: | 10.1002/grl.50473
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| 论文题名: | Buoyant currents arrested by convective dissolution |
| 作者: | Macminn C.W.; Juanes R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9055
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| EISSN: | 1944-8786
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| 出版年: | 2013
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| 卷: | 40, 期:10 | | 起始页码: | 2017
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| 结束页码: | 2022
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| 语种: | 英语
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| 英文关键词: | CO2 sequestration
; convective mixing
; gravity currents
; solubility trapping
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| Scopus关键词: | CO2 sequestration
; Convective mixing
; Fingering instabilities
; Geologic carbon sequestrations
; Gravity currents
; Laboratory experiments
; Solubility trapping
; Trapping mechanisms
; Aquifers
; Buoyancy
; Dissolution
; Groundwater resources
; Hydrogeology
; Carbon dioxide
; buoyancy forcing
; carbon dioxide
; carbon sequestration
; convective system
; dissolution
; groundwater
; numerical model
; solubilization
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| 英文摘要: | When carbon dioxide (CO2) dissolves into water, the density of water increases. This seemingly insubstantial phenomenon has profound implications for geologic carbon sequestration. Here we show, by means of laboratory experiments with analog fluids, that the up-slope migration of a buoyant current of CO2 is arrested by the convective dissolution that ensues from a fingering instability at the moving CO2-groundwater interface. We consider the effectiveness of convective dissolution as a large-scale trapping mechanism in sloping aquifers, and we show that a small amount of slope is beneficial compared to the horizontal case. We study the development and coarsening of the fingering instability along the migrating current and predict the maximum migration distance of the current with a simple sharp-interface model. We show that convective dissolution exerts a powerful control on CO2 plume dynamics and, as a result, on the potential of geologic carbon sequestration. © 2013 American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879991174&doi=10.1002%2fgrl.50473&partnerID=40&md5=057902bec4a8f6986074721e4c051fa9
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6319
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
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| Recommended Citation: | |
Macminn C.W.,Juanes R.. Buoyant currents arrested by convective dissolution[J]. Geophysical Research Letters,2013-01-01,40(10).
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