Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9662
AuthorsGiuntini, A.* 
Materni, V.* 
Chiappini, S.* 
Carluccio, R.* 
Console, R.* 
Chiappini, M.* 
TitleStation Travel‐Time Calibration Method Improves Location Accuracy on a Global Scale
Issue DateMar-2013
Series/Report no.2/84 (2013)
DOI10.1785/0220120124
URIhttp://hdl.handle.net/2122/9662
KeywordsTravel-time correction
Teleseimic location
Seismic monitoring and test-ban treaty verification.
Subject Classification04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous 
AbstractAccurate earthquake locations are crucial for investigating seismogenic processes, as well as for applications like verifying compliance to the Comprehensive Test Ban Treaty. Earthquake location accuracy is related to the degree of knowledge about the 3-D structure of seismic wave velocity in the Earth. It is well known that modeling errors of calculated travel times may have the effect of shifting the computed epicenters far from the real locations by a distance even larger than the size of the statistical error ellipses, regardless of the accuracy in picking seismic phase arrivals. In the present study, we develop a method of seismic location based on a set of well located events recorded by the dense national seismic network in a seismically active region of central Japan. We show that mislocations of the order of 10-20 km affecting the epicenters calculated from a global seismic network and using the standard IASPEI91 travel times can be effectively removed by applying station-source-specific corrections. The results show a clear correlation of the travel time residuals with the subduction structure beneath Japan.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Station Travel-Time Calibration Method-Giuntini&al.pdfMain Article4.79 MBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

82
checked on May 28, 2017

Download(s)

24
checked on May 28, 2017

Google ScholarTM

Check

Altmetric