Reduced-scale lab experiments : a valuable tool for exploring current challenges of seismic surveying, modeling and imaging in complex marine environments at a low cost and in an agile way ? - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2020

Reduced-scale lab experiments : a valuable tool for exploring current challenges of seismic surveying, modeling and imaging in complex marine environments at a low cost and in an agile way ?

Résumé

Recently, laboratory experiments have been reintroduced in the ideas-to-applications pipeline for geophysical issues. Benefiting from recent technological advances, laboratory experiments may play a major role in the coming years, in support of field experiments and numerical modeling, to explore some of the current challenges of seismic imaging in terms of, for instance, acquisition design or benchmarking of new imaging techniques at a low cost and in an agile way. But having confidence in the quality and the accuracy of the experimental data obtained in a complex configuration that mimics at a reduced scale a real geological environment is an essential prerequisite. This requires a robust framework regardless of the configuration studied. The goal of this work is to provide a global reflection on this framework in the context of offshore seismics. To illustrate this framework, we rely on different reduced-scale models, and more specifically on a model that represents a 3D complex-shaped salt body buried in sedimentary layers with curved surfaces. Zero-offset and offset reflection data are collected on this model in a water tank, using a conventional pulse-echo technique. We follow a cross-validation approach that allows, through the comparison between the experimental data and the numerical simulation of wave propagation, to point out both the improvements of the experimental setup that must still be made to increase the accuracy of the experiments, and the limitations of the numerical tools that must be tackled. This framework can be used with confidence to extensively investigate cutting-edge seismic modeling and imaging and acquisition issues in complex environments.
Fichier principal
Vignette du fichier
000330.pdf (13.97 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03240241 , version 1 (28-05-2021)

Identifiants

Citer

Nathalie Favretto-Cristini, Bence Solymosi, Vadim Monteiller, Paul Cristini, Bjorn Ursin. Reduced-scale lab experiments : a valuable tool for exploring current challenges of seismic surveying, modeling and imaging in complex marine environments at a low cost and in an agile way ?. Forum Acusticum, Dec 2020, Lyon, France. pp.2125-2132, ⟨10.48465/fa.2020.0330⟩. ⟨hal-03240241⟩
35 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More