气候变化领域集成服务门户(CCPortal): Fluid-Earthquake and Earthquake-Earthquake Interactions in Southern Kansas, USA

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DOI	10.1029/2020JB020384
	Fluid-Earthquake and Earthquake-Earthquake Interactions in Southern Kansas, USA
	Verdecchia A.; Cochran E.S.; Harrington R.M.
发表日期	2021
ISSN	21699313
卷号	126 期号:3
英文摘要	An increase in injection activity associated with energy production in southern Kansas starting in 2013 has been linked to the occurrence of more than 130,000 earthquakes (M −1.5 to 4.9) between 2014 and 2017. Studies suggest that the dramatic increase in seismicity rate is related to wastewater injection into the highly permeable Arbuckle formation. Most of the seismicity is located in the underlying crystalline basement, for which hydrological properties and specific fault geometries are unknown. Additionally, some earthquake clusters occurred relatively far (tens of kilometers) from the main injection wells. Therefore, the effect of pore pressure diffusion may be insufficient to explain the relation between the volume of injected fluids and the spatiotemporal evolution of seismicity. Combining physical models (static stress and poroelasticity) and a statistical cluster analysis applied to a high-resolution relocated catalog, we analyze the evolution of seismicity in southern Kansas. We find that pore pressure changes (Δp) and Coulomb stress changes (ΔCFS) due to fluid diffusion smaller than 0.1 MPa are enough to initiate seismic sequences, which then evolve depending on their distance from the major injection wells. However, we find that earthquake sequences have different seismogenic responses to Δp and ΔCFS in terms of triggering threshold. In regions located close to disposal wells (Harper area) our cluster analysis suggests that both earthquake interactions and fluid diffusion control the evolution of seismicity. On the other hand, at greater distances (Milan area), where clustering behavior suggests greater earthquake interactions, we find that coseismic ΔCFS are larger than Δp. © 2021. The Authors.
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/187309
作者单位	Institute of Geology, Mineralogy and Geophysics, Ruhr-University Bochum, Bochum, Germany; Department of Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; U.S. Geological Survey, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Verdecchia A.,Cochran E.S.,Harrington R.M.. Fluid-Earthquake and Earthquake-Earthquake Interactions in Southern Kansas, USA[J],2021,126(3).
APA	Verdecchia A.,Cochran E.S.,&Harrington R.M..(2021).Fluid-Earthquake and Earthquake-Earthquake Interactions in Southern Kansas, USA.Journal of Geophysical Research: Solid Earth,126(3).
MLA	Verdecchia A.,et al."Fluid-Earthquake and Earthquake-Earthquake Interactions in Southern Kansas, USA".Journal of Geophysical Research: Solid Earth 126.3(2021).