气候变化领域集成服务门户(CCPortal): Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array

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DOI	10.1029/2019JB017737
	Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array
	Frohlich C.; Hayward C.; Rosenblit J.; Aiken C.; Hennings P.; Savvaidis A.; Lemons C.; Horne E.; Walter J.I.; DeShon H.R.
发表日期	2020
ISSN	21699313
卷号	125 期号:1
英文摘要	In recent years, numerous small earthquakes have occurred near the town of Pecos in West Texas; however, when this activity began and whether it was caused by increased petroleum industry activity has been uncertain because prior to 2017 there were few permanent seismograph stations in the region. We identify and locate earthquakes using data recorded since 2000 at TXAR, a sensitive 10-station seismic array situated about 240 km south of Pecos. We thus show that in 2007, one earthquake occurred near Pecos, in 2009 several more occurred, and subsequently, activity has increased considerably, with more than 2000 events identified in 2017. A time-of-day and year-by-year analysis identifies geographic areas in West Texas where events are likely to be natural earthquakes and quarry blasts. However, for the Pecos events, annual seismicity rates increase along with annual volumes of petroleum production and fluid waste disposal, suggesting a causal link. Analysis of seismograms collected by the EarthScope Transportable Array indicates that the 2009 earthquakes had focal depths of 4.0–5.2 km below sea level, within or just below strata where petroleum is produced and/or wastewater is injected. The largest earthquake to date had magnitude ML3.7, but the recent high activity rates suggest that greater magnitudes may be possible. For the years 2000–2017, we provide a catalog of 10,753 epicenters of seismic events recorded at TXAR. ©2019. The Authors.
英文关键词	earthquakes and public policy; induced earthquakes; seismic array analysis
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/188058
作者单位	Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Huffington Department of Earth Sciences, Southern Methodist University, Dallas, TX, United States; Department of Geology, Portland State University, Portland, OR, United States; Geosciences Marine-LAD, IFREMER, Plouzané, France; Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Oklahoma Geological Survey, University of Oklahoma, Norman, OK, United States
推荐引用方式 GB/T 7714	Frohlich C.,Hayward C.,Rosenblit J.,et al. Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array[J],2020,125(1).
APA	Frohlich C..,Hayward C..,Rosenblit J..,Aiken C..,Hennings P..,...&DeShon H.R..(2020).Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array.Journal of Geophysical Research: Solid Earth,125(1).
MLA	Frohlich C.,et al."Onset and Cause of Increased Seismic Activity Near Pecos, West Texas, United States, From Observations at the Lajitas TXAR Seismic Array".Journal of Geophysical Research: Solid Earth 125.1(2020).