[an error occurred while processing this directive] Global Geology 2014, 17(4) 238-242 DOI:     ISSN: 1673-9736 CN: 22-1371/P

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WEI Yajie
HAN Liguo
DUAN Chaoran
WANG Hongye and GUO Kun
PubMed
Article by Wei Y
Article by Han L
Article by Duan C
Article by Wang HAGK
 
 
 
摘要:  
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Study of frequency domain full waveform inversion based on#br# Huber norm and L- BFGS algorithm
WEI Yajie, HAN Liguo, DUAN Chaoran, WANG Hongye and GUO Kun
College of Geo- Exploration Science and Technology,Jilin University,Changchun 130026,China
Abstract:

Full waveform inversion (FWI) is a high resolution inversion method,which can reveal detailed in- formation of the structure and lithology under complex geological background. It is limited by many kinds of noi- ses when the method applied to the real seismic data. Based on Huber function criterion,the objective function combinates the anti- noise of L 1 norm and the stability of L 2 norm in theory,the authors derive the gradient for- mula of the Huber function by using L- BFGS algorithm for FWI. The new method is proved by synthetic seismic data with the Gaussian noise and the impulse noise. Numerical test results show that L- BFGS algorithm is ap- plied to the frequency domain FWI with the convergence speed and high calculation accuracy,and can effec- tively reduce computer memory usage; and the Huber function is more robust and stable than L 2 norm even with the noises.

Keywords: full waveform inversion   Huber function   L- BFGS algorithm   anti- noise  
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