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Wave separation for the great Sumatra-Andaman earthquake with regional seismic array |
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| Authors: | Chunyan Zhang Sidao Ni Key Lab of Intelligent Computing Signal Processing of Ministry of Education School of Mathematics Anhui University Hefei China Key Laboratory of Dynamic Geodesy |
| Affiliation: | Chunyan Zhang 1 and Sidao Ni 2,1 Key Lab of Intelligent Computing and Signal Processing of Ministry of Education,School of Mathematics,Anhui University,Hefei 230039,China 2 Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China |
| Abstract: | We analyzed the seismic waveforms from the December 26,2004 Sumatra-Andaman earthquake recorded at broadband seismic stations in western Europe.Previous studies involving of the beam-forming technique and high frequency analysis suggest that the earthquake ruptured with a duration of around 500 s.This very long duration makes P wave overlap with later arrivals such as PP wave,which follows P in about 200 s.Since P waves are crucial for modeling earthquake processes,we propose an iterative method to separate... |
| Keywords: | rupture duration great Sumatra-Andaman earthquake wave separation array analysis |
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