Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078271 |
Self-Organizing Fluid Convection Patterns in an en Echelon Fault Array | |
Patterson, James W.1; Driesner, Thomas1; Matthai, Stephan K.2 | |
2018-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:10页码:4799-4808 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Australia |
英文摘要 | We present three-dimensional numerical simulations of natural convection in buried, vertical en echelon faults in impermeable host rock. Despite the fractures being hydraulically disconnected, convection within each fracture alters the temperature field in the surrounding host rock, altering convection in neighboring fractures. This leads to self-organization of coherent patterns of upward/downward flow and heating/cooling of the host rock spanning the entire fault array. This synchronization effect occurs when fracture spacing is less than the width of convection cells within the fractures, which is controlled by fracture transmissivity (permeability times thickness) and heterogeneity. Narrow fracture spacing and synchronization enhance convective fluid flow within fractures and cause convection to initiate earlier, even lowering the critical transmissivity necessary for convection initiation. Heat flow through the en echelon region, however, is enhanced only in low-transmissivity fractures, while heat flow in high-permeability fractures is reduced due to thermal interference between fractures. |
英文关键词 | convection en echelon faults geothermal fractures |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435262000031 |
WOS关键词 | DISCRETE FRACTURE NETWORK ; FINITE-ELEMENT ; GROUNDWATER-FLOW ; RHINE GRABEN ; HYDROTHERMAL CONVECTION ; THERMAL-CONVECTION ; SCALING PROPERTIES ; CRYSTALLINE ROCK ; POROUS-MEDIA ; PERMEABILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27640 |
专题 | 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol Zurich, Dept Earth Sci, Zurich, Switzerland; 2.Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia |
推荐引用方式 GB/T 7714 | Patterson, James W.,Driesner, Thomas,Matthai, Stephan K.. Self-Organizing Fluid Convection Patterns in an en Echelon Fault Array[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(10):4799-4808. |
APA | Patterson, James W.,Driesner, Thomas,&Matthai, Stephan K..(2018).Self-Organizing Fluid Convection Patterns in an en Echelon Fault Array.GEOPHYSICAL RESEARCH LETTERS,45(10),4799-4808. |
MLA | Patterson, James W.,et al."Self-Organizing Fluid Convection Patterns in an en Echelon Fault Array".GEOPHYSICAL RESEARCH LETTERS 45.10(2018):4799-4808. |
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