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January 01, 2023 conference-paper Aachen paper

Total variation regularization for first-break travel time inversion

EAGE Annual Conference & Exhibition, pp. 1–5

DOI: 10.3997/2214-4609.202310815 OpenAlex

Abstract

Summary For the first-break travel time inversion, L2-norm of the model gradient is usually employed as the regularization. However, this method tends to blur the model interface. To reconstruct the subsurface velocity with blocky structures, we present a Levenberg-Marquardt-type iterative total variation (TV) regularization method with the eikonal equation forward operator. This method has the potential of reconstructing the model interface with high resolution. We use 2004 BP model to test the robustness of the TV regularization in comparison to the conventional L2-norm regularization.

Authors 3

  1. Ye Zhang

    Johannes Gutenberg University Mainz · Max Planck Graduate Center

    Affiliation as printed

    Johannes Gutenberg University Mainz

    Max Planck Graduate Center with the Johannes Gutenberg University at Mainz

  2. Markus Bachmayr Aachen

    RWTH Aachen University

    Affiliation as printed

    RWTH Aachen

  3. Luca De Siena

    Johannes Gutenberg University Mainz

    Affiliation as printed

    Johannes Gutenberg University Mainz

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