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DOI | 10.1029/2019GL085201 |
Hydromechanical Modeling of Fault Reactivation in the St. Gallen Deep Geothermal Project (Switzerland): Poroelasticity or Hydraulic Connection? | |
Zbinden, Dominik; Rinaldi, Antonio P.; Diehl, Tobias; Wiemer, Stefan | |
2020-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland |
英文摘要 | In 2013, fluid injection during the St. Gallen deep geothermal project, Switzerland, induced hundreds of seismic events, including a M-L 3.5 earthquake on a fault hundreds of meters away from the well. Recent studies have suggested the direct pressure effect through permeable hydraulic connections and poroelastic effects as possible mechanisms for inducing seismicity on distant faults. In St. Gallen, operational, seismic, and earthquake data are available to investigate the underlying physical mechanisms using a numerical model. The results show that Coulomb stress changes at the fault can be 3 orders of magnitude greater when a hydraulic connection is present. Combining this with several field observations, we conclude that the direct pressure effect was more likely the predominant mechanism behind the seismicity induced in St. Gallen. The detection of hydraulic connections may be important for future projects as pressure can be driven far from the well and reactivate remote faults. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529107400026 |
WOS关键词 | FLUID INJECTION ; SEISMICITY ; EARTHQUAKE ; PERMEABILITY ; STIMULATION ; ZONES ; FLOW ; SYSTEMS ; ROCKS |
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/279626 |
专题 | 气候变化 |
作者单位 | ETHZ, Swiss Seismol Serv, Swiss Fed Inst Technol, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Zbinden, Dominik,Rinaldi, Antonio P.,Diehl, Tobias,et al. Hydromechanical Modeling of Fault Reactivation in the St. Gallen Deep Geothermal Project (Switzerland): Poroelasticity or Hydraulic Connection?[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(3). |
APA | Zbinden, Dominik,Rinaldi, Antonio P.,Diehl, Tobias,&Wiemer, Stefan.(2020).Hydromechanical Modeling of Fault Reactivation in the St. Gallen Deep Geothermal Project (Switzerland): Poroelasticity or Hydraulic Connection?.GEOPHYSICAL RESEARCH LETTERS,47(3). |
MLA | Zbinden, Dominik,et al."Hydromechanical Modeling of Fault Reactivation in the St. Gallen Deep Geothermal Project (Switzerland): Poroelasticity or Hydraulic Connection?".GEOPHYSICAL RESEARCH LETTERS 47.3(2020). |
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