A Numerical Toolbox to Calculate the Seismic Properties of Micro Sized Isotropic and Anisotropic Minerals

• Seismology offers valuable information about the nature of lithosphere and asthenosphere. Seismic waves are used to investigation the Earth’s crust and upper mantel and to understand their placement and depth. In this respect, outcrop samples’ thin sections provide a wealth of information about the rocks seismic properties. A numerical toolbox is presented to investigate the seismic properties of rock samples. For this purpose, the toolbox makes use of image processing capabilities of MATLAB combined with computational power of FEM based COMSOL multiphysics. The toolbox provides variety of studies and analyses and it is specifically used to investigate the wave speed velocities in a Gabbro sample thin-section. There are several software packages in the technical community which can calculate the seismic velocities analytically by employing the effective medium theory. The toolbox is benchmarked against the existing software packages and additional features are discussed. An objective of the numerical measurements would be the investigate of the influence of grain sizes on elastic wave velocities and potential scattering due to the wavelength effects.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)

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