气候变化领域集成服务门户(CCPortal): Three-Dimensional Pore Fluid Pressures in Source Region of 2017 Pohang Earthquake Inferred From Earthquake Focal Mechanisms

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DOI	10.1029/2019GL085964
	Three-Dimensional Pore Fluid Pressures in Source Region of 2017 Pohang Earthquake Inferred From Earthquake Focal Mechanisms
	Terakawa T.; Seo W.; Kim K.-H.; Ree J.-H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	We analyzed 91 focal mechanism data with relocated hypocenters to estimate the 3-D pore fluid pressure field in the source region of the 2017 Pohang earthquake in South Korea using the method of focal mechanism tomography. The upper limit of pore fluid pressure was 8 ± 3 MPa in a location northwest of the enhanced geothermal system. The overpressurized fluids were localized in the footwall of the causative fault. It was directly connected to the open hole section of PX2, and fluid injection into this hole could have triggered the mainshock. ©2020. The Authors.
英文关键词	Geothermal fields; Transport properties; Earthquake focal mechanisms; Enhanced geothermal systems; Fluid injections; Focal mechanism; Pore fluid pressure; Source region; Three-dimensional pores; Upper limits; Earthquakes; earthquake hypocenter; fluid injection; fluid pressure; focal mechanism; footwall; geothermal system; pore space; pressure field; seismic tomography; three-dimensional modeling; North Kyongsang; Pohang; South Korea
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/170404
作者单位	Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Department of Geological Science, Pusan National University, Busan, South Korea; Department of Earth and Environmental Sciences, Korea University, Seoul, South Korea
推荐引用方式 GB/T 7714	Terakawa T.,Seo W.,Kim K.-H.,et al. Three-Dimensional Pore Fluid Pressures in Source Region of 2017 Pohang Earthquake Inferred From Earthquake Focal Mechanisms[J],2020,47(9).
APA	Terakawa T.,Seo W.,Kim K.-H.,&Ree J.-H..(2020).Three-Dimensional Pore Fluid Pressures in Source Region of 2017 Pohang Earthquake Inferred From Earthquake Focal Mechanisms.Geophysical Research Letters,47(9).
MLA	Terakawa T.,et al."Three-Dimensional Pore Fluid Pressures in Source Region of 2017 Pohang Earthquake Inferred From Earthquake Focal Mechanisms".Geophysical Research Letters 47.9(2020).