| DOI: | 10.1002/2014GL061634
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| 论文题名: | On attenuation of seismic waves associated with flow in fractures |
| 作者: | Vinci C.; Renner J.; Steeb H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9645
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| EISSN: | 1944-9376
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| 出版年: | 2014
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| 卷: | 41, 期:21 | | 起始页码: | 7515
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| 结束页码: | 7523
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| 语种: | 英语
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| 英文关键词: | fracture flow
; modeling
; numerical simulation
; seismic attenuation
; wave-induced fluid flow
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| Scopus关键词: | Aspect ratio
; Computer simulation
; Deformation
; Diffusion in liquids
; Fracture
; Models
; Porous materials
; Seismic waves
; Seismology
; Diffusion equations
; Diffusion-based model
; Fracture flow
; Geometrical aspects
; Intersecting fractures
; Pressure transient
; Seismic attenuation
; Wave-induced fluid flow
; Flow of fluids
; deformation
; fluid flow
; fracture flow
; heterogeneity
; leakage
; porous medium
; seismic wave
; simulation
; timescale
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| 英文摘要: | Heterogeneity of porous media induces a number of fluid-flow mechanisms causing attenuation of seismic waves. Attenuation induced by squirt-type mechanisms has previously been analyzed for aspect ratios smaller or equal to 103. Using a hybrid-dimensional modeling approach, particularly apt for large aspect ratio conduits, we numerically simulated deformation-induced fluid flow along two intersecting fractures to investigate the physics of attenuation related to the interaction of fracture-induced fluid flow and to leak-off. Attenuation related to fracture flow increases in magnitude with increasing geometrical aspect ratio of the fracture. The inherent time scales of both flow mechanisms do not influence each other, but the faster process is associated with stronger attenuation than the slower process. Models relying on simple diffusion equations have rather limited potential for approximation of pressure transients. Key Points Simulate deformation-induced fluid flow in fractures and related attenuationFracture flow attenuation increases with the aspect ratio of the fracturesSimple diffusion-based models have limited approximation potential ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912139375&doi=10.1002%2f2014GL061634&partnerID=40&md5=a529764c024f17f555222a264d31a4af
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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/6909
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Institute of Mechanics, Ruhr-Universität Bochum, Bochum, Germany
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| Recommended Citation: | |
Vinci C.,Renner J.,Steeb H.. On attenuation of seismic waves associated with flow in fractures[J]. Geophysical Research Letters,2014-01-01,41(21).
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