气候变化领域集成服务门户(CCPortal): Sequential Fault Reactivation and Secondary Triggering in the March 2019 Red Deer Induced Earthquake Swarm

CCPortal

DOI	10.1029/2020GL090219
	Sequential Fault Reactivation and Secondary Triggering in the March 2019 Red Deer Induced Earthquake Swarm
	Wang J.; Li T.; Gu Y.J.; Schultz R.; Yusifbayov J.; Zhang M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Using data from nodal geophones and broadband seismometers, this study investigates the seismicity near Red Deer, Alberta, a region with increasing cases of hydraulic fracturing (HF)-induced earthquakes. A cluster of 417 events was detected, and their spatial distribution and focal mechanisms reveal a NE trending rupture area with two strike-slip fault planes. Reactivation of preexisting faults by pore pressure diffusion is likely responsible for the occurrence of the earthquake sequence following the ML 4.18 mainshock. The temporal sequence of reactivated fault orientations suggests apparent changes in the local stress field following the mainshock, which is also responsible for a remotely triggered cluster observed 1 month after the mainshock. This secondary triggering process enhances our understanding of the trailing effect of HF-induced seismicity. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Induced Seismicity; Strike-slip faults; Structural geology; Broad-band seismometers; Earthquake sequences; Earthquake swarms; Fault orientations; Fault reactivation; Focal mechanism; Pressure diffusion; Temporal sequences; Earthquakes; earthquake event; earthquake trigger; hydraulic fracturing; induced seismicity; pore pressure; spatial distribution; spatiotemporal analysis; Alberta; Canada; Alberta; Cervus elaphus
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169422
作者单位	Department of Physics, University of Alberta, Edmonton, AB, Canada; Department of Geophysics, Stanford University, Stanford, CA, United States; Alberta Geological Survey, Alberta Energy Regulator, Edmonton, AB, Canada; Department of Earth and Environmental Sciences, Dalhousie University, Halifax, NS, Canada
推荐引用方式 GB/T 7714	Wang J.,Li T.,Gu Y.J.,et al. Sequential Fault Reactivation and Secondary Triggering in the March 2019 Red Deer Induced Earthquake Swarm[J],2020,47(22).
APA	Wang J.,Li T.,Gu Y.J.,Schultz R.,Yusifbayov J.,&Zhang M..(2020).Sequential Fault Reactivation and Secondary Triggering in the March 2019 Red Deer Induced Earthquake Swarm.Geophysical Research Letters,47(22).
MLA	Wang J.,et al."Sequential Fault Reactivation and Secondary Triggering in the March 2019 Red Deer Induced Earthquake Swarm".Geophysical Research Letters 47.22(2020).