DOI: 10.1016/j.epsl.2017.11.037
Scopus记录号: 2-s2.0-85035124749
论文题名: Geothermal production and reduced seismicity: Correlation and proposed mechanism
作者: Cardiff M. ; Lim D.D. ; Patterson J.R. ; Akerley J. ; Spielman P. ; Lopeman J. ; Walsh P. ; Singh A. ; Foxall W. ; Wang H.F. ; Lord N.E. ; Thurber C.H. ; Fratta D. ; Mellors R.J. ; Davatzes N.C. ; Feigl K.L.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 470
结束页码: 477
语种: 英语
英文关键词: correlation
; effective stress
; geothermal field
; microseismicity
Scopus关键词: Correlation methods
; Extraction
; Fault slips
; Geothermal energy
; Geothermal fields
; Hot springs
; Maintenance
; Plant shutdowns
; Pumps
; Seismic waves
; Average rate
; Effective stress
; Electrical power
; Heated fluids
; Microseismicity
; Normal operations
; Plant maintenance
; Seismic event
; Geothermal springs
; effective stress
; extraction
; geothermal power
; seismicity
; Brady Geothermal Field
; Nevada
; United States
英文摘要: At Brady Hot Springs, a geothermal field in Nevada, heated fluids have been extracted, cooled, and re-injected to produce electrical power since 1992. Analysis of daily pumping records and catalogs of microseismicity between 2010 and 2015 indicates a statistically significant correlation between days when the daily volume of production was at or above its long-term average rate and days when no seismic event was detected. Conversely, shutdowns in pumping for plant maintenance correlate with increased microseismicity. We hypothesize that the effective stress in the subsurface has adapted to the long-term normal operations (deep extraction) at the site. Under this hypothesis, extraction of fluids inhibits fault slip by increasing the effective stress on faults; in contrast, brief pumping cessations represent times when effective stress is decreased below its long-term average, increasing the likelihood of microseismicity. © 2017 The Author(s) Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110110
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: University of Wisconsin-Madison, United States; ORMAT Technologies Inc., United States; Lawrence Berkeley National Laboratory, United States; Temple University, United States; Lawrence Livermore National Laboratory, United States
Recommended Citation:
Cardiff M.,Lim D.D.,Patterson J.R.,et al. Geothermal production and reduced seismicity: Correlation and proposed mechanism[J]. Earth and Planetary Science Letters,2018-01-01,482