Impact of Induced Seismicity on the Evaluation of Seismic Hazard: Some Preliminary Considerations

被引：56

作者：

Atkinson, Gail M. ^{[1
]}

Ghofrani, Hadi ^{[1
]}

Assatourians, Karen ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Earth Sci, London, ON N6A 5B7, Canada

来源：

SEISMOLOGICAL RESEARCH LETTERS | 2015年 / 86卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

STABLE CONTINENTAL REGIONS; INDUCED EARTHQUAKES; MOMENT ASSESSMENT; MAGNITUDE EARTHQUAKES; MULTIFRACTAL ANALYSIS; GROUND-MOTION; INJECTION; OKLAHOMA;

D O I：

10.1785/0220140204

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A case study of seismicity induced by hydraulic fracturing operations near Fox Creek, Alberta, is used to evaluate the extent to which the potential for induced seismicity at a site alters the pre-existing hazard from natural seismicity. We find that in low-to-moderate seismicity environments, the hazard from an induced-seismicity source, if one is activated in close proximity to a site, can greatly exceed the hazard from natural background seismicity at most probabilities of engineering interest, over a wide frequency range. The most important parameters in determining the induced-seismicity hazard are the activation probability and the b-value of the initiated sequence. Uncertainty in the value of the key input parameters to a hazard analysis implies large uncertainty (more than an order of magnitude) in the likelihood of strong shaking.

引用

页码：1009 / 1021

页数：13

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