The November 2017 Mw 5.5 Pohang earthquake: a possible case of induced seismicity in South Korea

Grigoli, F., Cesca, S., Rinaldi, A.P., Manconi, A., López-Comino, J.A., Clinton, J.F., Westaway, R., Cauzzi, C., Dahm, T. and Wiemer, S. (2018) The November 2017 Mw 5.5 Pohang earthquake: a possible case of induced seismicity in South Korea. Science, 360(6392), pp. 1003-1006. (doi: 10.1126/science.aat2010) (PMID:29700226)

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Abstract

The Mw 5.5 earthquake that struck South Korea in November 2017 was one of the largest and most damaging events in this country over the last century. Its proximity to an Enhanced Geothermal Systems site, where high pressure hydraulic injection had been performed during the previous two years, raises the possibility that this earthquake was anthropogenic. We have combined seismological and geodetic analyses to characterize the mainshock and its largest aftershocks, constrain the geometry of this seismic sequence and shed light on its casual factors. According to our analysis it seems plausible that the occurrence of this earthquake was influenced by these industrial activities. Finally we found that the earthquake transferred static stress to larger nearby faults, potentially increasing the seismic hazard in the area.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Westaway, Dr Robert
Authors: Grigoli, F., Cesca, S., Rinaldi, A.P., Manconi, A., López-Comino, J.A., Clinton, J.F., Westaway, R., Cauzzi, C., Dahm, T., and Wiemer, S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Science
Publisher:American Association for the Advancement of Science
ISSN:0036-8075
ISSN (Online):1095-9203
Published Online:27 April 2018
Copyright Holders:Copyright © 2018 American Association for the Advancement of Science
First Published:First published in Science 360(6392):1003-1006
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
704811DESTRESSNeil BurnsideEuropean Commission (EC)691728ENG - ENGINEERING SYSTEMS POWER & ENERGY
684991SHEERNeil BurnsideEuropean Commission (EC)640896ENG - ENGINEERING SYSTEMS POWER & ENERGY