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    A reproducible framework for 3D acoustic forward modelling of hard rock geological models with Madagascar

    Access Status
    Fulltext not available
    Authors
    Squelch, Andrew
    Madadi, M.
    Urosevic, Milovan
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Squelch, A. and Madadi, M. and Urosevic, M. 2013. A reproducible framework for 3D acoustic forward modelling of hard rock geological models with Madagascar, in Proceedings of the 23rd International Geophysical Conference and Exhibition, Aug 11-14 2013. Melbourne: CSIRO.
    Source Title
    ASEG Extended Abstracts 2013
    Source Conference
    23rd International Geophysical Conference and Exhibition
    DOI
    10.1071/ASEG2013ab106
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/12324
    Collection
    • Curtin Research Publications
    Abstract

    A special challenge of hard rock exploration is to identify targets of interest within complex geological settings. Interpretation of the geology can be made from direct geological observations and knowledge of the area, and from 2D or 3D seismic surveys. These interpretations can be developed into 3D geological models that provide the basis for predictions as to likely targets for drilling and/or mining. To verify these predictions we need to simulate 3D seismic wave propagation in the proposed geological models and compare the simulation results to seismic survey data. To achieve this we convert geological surfaces created in an interpretation software package into discretised block models representing the different lithostratigraphic units, and segment these into discrete volumes to which appropriate density and seismic velocity values are assigned. This approach allows us to scale models appropriately for desired wave propagation parameters and to go from local to global geological models and vice versa. Then we use these digital models with forward modelling codes to undertake numerous 3D acoustic wave simulations. Simulations are performed with single shot and with exploding reflector (located on extracted geological surface) configurations.

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