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Rayleigh Wave Inversion Using G-PSO Algorithm
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
Summary
Firstly, we present a modified particle swarm optimization (PSO) algorithm called “group-PSO” (G-PSO) by introduce a new kind of particles called “group particles”. Experimental result shows that G-PSO is superior to standard PSO. Secondly, we use G-PSO to inverse fundamental mode of Rayleigh wave. The strategy works well with the 3-layer model but fail to get acceptable results with the 4-layer model. At last, we introduce higher modes to the inversion. Results show that considering higher modes in the inversion process is an alternative way to get better results.
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