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Different Alternatives of Surface Waves Data Inversion. Applications on Environmental and Geotechnical Case StudiesNormal access

Authors: G.S. Kritikakis and A. Vafidis
Event name: 6th Congress of the Balkan Geophysical Society
Session: First Poster Session
Publication date: 03 October 2011
Organisations: BGS, EAGE
Language: English
Info: Extended abstract, PDF ( 1.98Mb )
Price: € 20

Summary:
The inversion of Rayleigh surface waves dispersion curves exhibits the last few years rapid development in geotechnical and environmental geophysics. This study stresses on the demonstration of different alternatives of surface waves data inversion. The implemented algorithms (kriSIS) consist of several inversion techniques such as the usage of Quasi-Newton methods, the minimization of L1 or L2 norms, the application of smoothing, damping and blocky constraints and their combinations, as well as weighting inversion using data errors and/or the values of Jacobian matrix. Furthermore, any a-priori geophysical or/and geotechnical information can be taken in to account during the inversion. Two selected inversion techniques (damping and combination of blocky constraint with L1 norm minimization), were applied at two areas of environmental and geotechnical interest. This study indicates that the choice of the most appropriate inversion technique is crucial for any high resolution study.


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