Application of EBWO with chaotic mapping, reverse learning, and modified Lévy flight for joint inversion of seismic and VES data: Sea intrusion case
Joint inversion of Rayleigh-wave dispersion and vertical electrical sounding (VES) data can reduce the non-uniqueness of near-surface geophysical interpretation, but its performance strongly depends on the robustness of the optimization algorithm. In this study, an Enhanced Beluga Whale Optimization (EBWO) algorithm is proposed for joint seismic–electrical inversion. EBWO improves the original Beluga Whale Optimization (BWO) by incorporating Tent chaotic mapping and reverse learning for population initialization, together with a Lévy-flight-based golden sine strategy for offspring updating. Benchmark-function tests show that EBWO provided higher optimization accuracy and stability than the original BWO. Synthetic joint inversion experiments under both noise-free and noise-contaminated conditions further demonstrate that EBWO yielded more accurate and stable estimates than BWO and Particle Swarm Optimization. Application to field data from the Besirli region in Türkiye also produced lower fitting errors and better agreement with previous geophysical interpretations. These results indicate that EBWO is an effective and reliable optimization tool for joint Rayleigh-wave and VES inversion.
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