Frequency-domain finite-difference one-way full-wavefield modeling

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    Abstract

    Seismic modelling plays an important role in the estimation of subsurface parameters by waveform inversion. Modelling methods based on a two-way wave equation are well known for their high accuracy, however by using them explicitly when solving inverse problems is very nonlinear, yielding local minima issues. One of the possibilities to overcome this is splitting the governing two-way wave equation into a set of one-way wave equations that define propagation along the preferred (vertical) direction and that are coupled by a special term that includes transmission and reflection functions. In this case, the scattering is mainly driven by the coupling term whereas the velocity model is responsible for the propagation, which simplifies the inversion and also puts more control on the modelling. We demonstrate that this system of equations can be discretized and solved numerically using a frequency-domain finite-difference (FDFD) approach. Numerical examples demonstrate the validity of such modelling as a forward model in full wavefield migration (FWM) – an inversion-based imaging method that includes multiple scattering and transmission effects.
    Original languageEnglish
    Title of host publicationSEG Technical Program Expanded Abstracts 2018
    Subtitle of host publication14-19 October 2018, Anaheim, United States
    EditorsD. Alumbaugh, D. Bevc
    PublisherSEG
    Pages3908-3912
    DOIs
    Publication statusPublished - 2018
    EventSEG Annual Meeting 2018 - Anaheim convention Center, Anaheim, United States
    Duration: 14 Oct 201819 Oct 2018
    Conference number: 88
    https://seg.org/Annual-Meeting-2018

    Publication series

    NameSEG Technical Program Expanded Abstracts 2018
    PublisherSEG
    ISSN (Electronic)1949-4645

    Other

    OtherSEG Annual Meeting 2018
    Abbreviated titleSEG 2018
    CountryUnited States
    CityAnaheim
    Period14/10/1819/10/18
    Internet address

    Keywords

    • modeling
    • finite difference
    • wave propagation
    • full-waveform inversion

    Fingerprint Dive into the research topics of 'Frequency-domain finite-difference one-way full-wavefield modeling'. Together they form a unique fingerprint.

    Cite this