DocumentCode
2038593
Title
Searching algorithm for hypocenter location in convex polygon boundaries
Author
Thirachai, S. ; Suwatthikul, J. ; Sornmuang, S.
Author_Institution
Ind. Control & Autom. Lab. (ICA), Nat. Electron. & Comput. Technol. Center (NECTEC), Pathumthani, Thailand
fYear
2011
fDate
13-18 Sept. 2011
Firstpage
2643
Lastpage
2647
Abstract
In an earthquake monitoring system, seismic waves are analyzed by experts or computer software to determine a magnitude and to locate the hypocenter of the earthquake. A common method for locating the hypocenter is the optimization of the least square error approach, LSE, where at least three distance values gathered from three or more different monitoring stations are required. This paper presents an approach to locating a hypocenter by employing convex polygon boundaries when computing the location. The boundaries defined by multiple planes avoid computational iterations leaving the polygon where the hypocenter is expected. The LSE approach is then applied for the calculation. Simulation results show that when using this approach the hypocenter can be identified more efficiently.
Keywords
earthquakes; geophysical techniques; geophysics computing; iterative methods; least squares approximations; optimisation; search problems; seismic waves; LSE; computational iteration; computer software; convex polygon boundary; earthquake monitoring system; hypocenter location; least square error optimization; monitoring station; multiple plane; searching algorithm; seismic wave; Cost function; Earthquakes; Estimation; Iterative methods; Monitoring; Optimization methods; Epicenter; Hypocenter Location;
fLanguage
English
Publisher
ieee
Conference_Titel
SICE Annual Conference (SICE), 2011 Proceedings of
Conference_Location
Tokyo
ISSN
pending
Print_ISBN
978-1-4577-0714-8
Type
conf
Filename
6060426
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