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Source mechanism study of local earthquakes in Kuwait

Chen Gu, Farah Al-Jeri, Abdullah Al-Enezi, Oral Buyukozturk and M. Nafi Toksoz
Source mechanism study of local earthquakes in Kuwait
Seismological Research Letters (August 2017) 88 (6): 1465-1471

Abstract

Historically, Kuwait has relatively low seismicity; however, in recent years the Kuwait National Seismic Network (KNSN) has detected a significant number of local earthquakes. In 2015, two earthquakes-M (sub w) 4.5 on 21 March 2015 and M (sub w) 4.1 on 18 August 2015-were recorded by the KNSN and were widely felt across Kuwait. Most earthquakes happen in two areas close to the northern and southern oil/gas fields. The earthquakes are generally small (M (sub w) <5) and are shallow with focal depths of about 2-8 km. We determined the locations and source mechanisms of the largest two of these local earthquakes, using a Bayesian inversion method. Our results show that most likely these local earthquakes occurred on pre-existing faults and may have been triggered by oil field activities. In Kuwait, where oil fields are close to populated areas, these induced earthquakes could produce ground accelerations high enough to cause damage to local structures built without using seismic design criteria.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 88
Serial Issue: 6
Title: Source mechanism study of local earthquakes in Kuwait
Affiliation: Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States
Pages: 1465-1471
Published: 20170823
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 22
Accession Number: 2017-082729
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
N28°45'00" - N30°00'00", E46°45'00" - E48°45'00"
Secondary Affiliation: Kuwait Institute for Scientific Research, KWT, Kuwait
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201743
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