气候变化领域集成服务门户(CCPortal): Statistical Modeling and Characterization of Induced Seismicity Within the Western Canada Sedimentary Basin

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DOI	10.1029/2020JB020606
	Statistical Modeling and Characterization of Induced Seismicity Within the Western Canada Sedimentary Basin
	Kothari S.; Shcherbakov R.; Atkinson G.
发表日期	2020
ISSN	21699313
卷号	125 期号:12
英文摘要	In western Canada, there has been an increase in seismic activity linked to anthropogenic energy-related operations including conventional hydrocarbon production, wastewater fluid injection, and, more recently, hydraulic fracturing (HF). Statistical modeling and characterization of the space, time, and magnitude distributions of the seismicity are vital for a better understanding of induced earthquake processes and development of forecasting models. In this work, a statistical analysis of the seismicity in the Western Canada Sedimentary Basin was performed across past and present time periods by utilizing a compiled earthquake catalog for Alberta and eastern British Columbia. Specifically, the interevent space-time distance distributions of earthquakes were studied using the nearest-neighbor distance (NND) method. Additionally, the frequency-magnitude statistics and aftershock parameters of several clusters were analyzed using the Gutenberg-Richter relation and the epidemic-type aftershock sequence model. The results suggest that recent regional changes in the NND distributions, namely, a disproportionate increase in loosely and tightly clustered seismic activity over time, are unnatural and likely due to the rise in HF operations for the development of unconventional resources. It is concluded that both these loosely and tightly clustered earthquake subpopulations differ measurably from what may be the region's tectonic seismic activity. Additionally, HF treatments have a greater probability of triggering swarm-like sequences that sharply spike the seismicity rate and are characterized by larger Gutenberg-Richter b values. In contrast, conventional production and wastewater disposal operations largely trigger loosely clustered activity with more typical magnitude occurrence distributions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Alberta; clustering; hydraulic fracturing; induced seismicity; modeling; statistics
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187464
作者单位	Department of Earth Sciences, Western University, London, ON, Canada; Department of Physics and Astronomy, Western University, London, ON, Canada
推荐引用方式 GB/T 7714	Kothari S.,Shcherbakov R.,Atkinson G.. Statistical Modeling and Characterization of Induced Seismicity Within the Western Canada Sedimentary Basin[J],2020,125(12).
APA	Kothari S.,Shcherbakov R.,&Atkinson G..(2020).Statistical Modeling and Characterization of Induced Seismicity Within the Western Canada Sedimentary Basin.Journal of Geophysical Research: Solid Earth,125(12).
MLA	Kothari S.,et al."Statistical Modeling and Characterization of Induced Seismicity Within the Western Canada Sedimentary Basin".Journal of Geophysical Research: Solid Earth 125.12(2020).