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Joint Inversion of Surface Wave Dispersion Curves and Reflection Travel Times via Multi-objective Evolutionary Algorithms by G. Dal Moro; M. Pipan is a Earth and Planetary Sciences article available to read on EtoBox.

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Due to the character of seismic energy generation and propagation, shallow high-resolution seismic-reflection surveys often fail in the identification of the shallowest horizons and, due to the limited offsets, accuracy of velocity analyses is often not very high. In recent years, Rayleigh wave dispersion analysis have proved to have good potential also for near-surface applications but dispersion curve inversion and related uncertainty evaluation pose serious problems to a completely stand-alone application. In order to overcome these problems a joint inversion scheme is proposed, which is based on the identification of the Pareto front, performed in the framework of a Multi-Objective Evolutionary Algorithm (MOEA). Seismic data considered to design the two objectives are the Rayleigh wave dispersion curve and reflection travel times. We initially analyse a set of synthetic cases and evaluate the obtained results. A significant improvement of the retrieved models is observed as long as reflection travel times are added to the dispersion curve alone. Furthermore, the proposed methodology also provides relevant indications about the consistency of the overall inversion process. In fa

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Author

G. Dal Moro; M. Pipan

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0926-9851)

Published

2007

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)