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DOI	10.1002/2017JB014983
	Locations of Injection-Induced Earthquakes in Oklahoma Controlled by Crustal Structures
	Pei, Shunping; Peng, Zhigang; Chen, Xiaowei
通讯作者	Pei, SP (通讯作者)
发表日期	2018
ISSN	2169-9313
EISSN	2169-9356
起始页码	2332
结束页码	2344
卷号	123 期号:3
英文摘要	In recent years, many small- to moderate-size earthquakes occurred in central northern Oklahoma, likely associated with wastewater injection. The most recent one is the M5.8 Pawnee earthquake occurred on 3 September 2016. It is still not clear what controls the locations of these injection-induced earthquakes. Here we conduct 2-D Pg wave tomography with anisotropy to image seismogenic structures in this region, using more than 10years of Pg arrivals recorded by 81 seismic stations. Our high-resolution Pg wave tomography shows two high-velocity zones with northwest fast direction alternated by low-velocity zones with northeast fast direction. The two dominant anisotropy directions are consistent with conjugated microfractures from surface faults and two nodal planes from focal mechanisms of moderate-size earthquakes. Most moderate-size (M>4) earthquakes occurred either close to the boundaries between high- and low-seismic velocity zones or within the high-velocity zones, suggesting that they are associated with geological boundaries of different basement rock properties or with strong material properties in the upper crust. We suggest that although these moderate-size earthquakes were induced by fluid injection, their spatial locations were likely controlled by local geologic structures.
关键词	W 5.8 PAWNEE SEISMIC VELOCITY STRUCTURE YUSHU EARTHQUAKE FLUID INJECTION TOMOGRAPHY CONSTRAINTS INVERSION FAIRVIEW DISPOSAL INCREASE
英文关键词	tomographic structure; Oklahoma; induced earthquake
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000430393900017
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259256
推荐引用方式 GB/T 7714	Pei, Shunping,Peng, Zhigang,Chen, Xiaowei. Locations of Injection-Induced Earthquakes in Oklahoma Controlled by Crustal Structures[J]. 中国科学院青藏高原研究所,2018,123(3).
APA	Pei, Shunping,Peng, Zhigang,&Chen, Xiaowei.(2018).Locations of Injection-Induced Earthquakes in Oklahoma Controlled by Crustal Structures.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,123(3).
MLA	Pei, Shunping,et al."Locations of Injection-Induced Earthquakes in Oklahoma Controlled by Crustal Structures".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123.3(2018).