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Journal of Seismology : Volume 4, Issue 2, April 2000

Journal of Seismology : Volume 4, Issue 1, January 2000

Journal of Seismology : Volume 3

Journal of Seismology : Volume 2

Journal of Seismology : Volume 1

Discrepancies in earthquake location between ISC and other agencies

Content Provider	Springer Nature Link
Author	Storchak, D.A. Bird, A.L. Adams, R.D.
Copyright Year	2000
Abstract	The different operating requirements of the International Seismological Centre (ISC) from those of the National Earthquake Information Service of the US Geological Survey(NEIS), and of the prototype International Data Center to monitor the Comprehensive Test Ban Treaty (pIDC), result in some discrepancies between earthquake locations computed by the three agencies. For larger events recorded by many stations the differences are small, but for some smaller events differences in location of up to 20$^{°}$ may occur. The largest discrepancies are found for small events in areas where later analysis by ISC has the benefit of additional readings from regional seismograph networks and where ISC has made a different interpretation of the station readingsavailable to pIDC and NEIS. We identify regions where such discrepancies occur most frequently, and give some examples for which the augmented data set of ISC has resulted in significant improvement for specific earthquakes. NEIS and, particularly, pIDC produce their results more speedily than ISC, and these form a valuable starting point for the later, more complete ISC analysis, which is commonly considered the most definitive compilation of global earthquake information.
Starting Page	321
Ending Page	331
Page Count	11
File Format	PDF
ISSN	13834649
Journal	Journal of Seismology
Volume Number	4
Issue Number	3
e-ISSN	1573157X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Structural Geology Geophysics/Geodesy Hydrogeology Geotechnical Engineering
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

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