Numerical simulation of seismic waves in the regional and global earth with 3D Gaussian quadrature grids. The ability to realistically model the propagation of seismic waves through the global 3D earth, taking account of all internal and surface complexity, is extremely important for predicting the response to earthquakes and imaging the interior structure. This will lead to fundamental new knowledge on Earth constitution and heterogeneity, and will have spin-off benefits in others areas such as ....Numerical simulation of seismic waves in the regional and global earth with 3D Gaussian quadrature grids. The ability to realistically model the propagation of seismic waves through the global 3D earth, taking account of all internal and surface complexity, is extremely important for predicting the response to earthquakes and imaging the interior structure. This will lead to fundamental new knowledge on Earth constitution and heterogeneity, and will have spin-off benefits in others areas such as exploring for oil and minerals, and better understanding of seismic hazard. The numerical modelling and seismic data analysis will be done on a supercomputer, thus providing important training for research students. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668155
Funder
Australian Research Council
Funding Amount
$350,000.00
Summary
Instrumentation for combined seismic and electromagnetic Earth sounding. The set of geophysical recorders will provide the means to enhance understanding of the structure of the Australian continent in 3-D. The interpretation of multiple images of Earth structure will help to link features in the crust and mantle beneath, and provide controls on the evolution and assembly of the present continent, with a major contribution to possible geotransects as recommended in the 2003 National Strategic Pl ....Instrumentation for combined seismic and electromagnetic Earth sounding. The set of geophysical recorders will provide the means to enhance understanding of the structure of the Australian continent in 3-D. The interpretation of multiple images of Earth structure will help to link features in the crust and mantle beneath, and provide controls on the evolution and assembly of the present continent, with a major contribution to possible geotransects as recommended in the 2003 National Strategic Plan for the Geosciences. Combining seismic and electromagnetic methods will provide both geochemeical and geophysical constaints, e.g., on zones of alteration and shear with the potential for deep mineralisation. Read moreRead less
Seismic wave modelling and inversion for the most general 3-D anisotropic media. Advanced numerical techniques will be developed and applied to simulate the kinematic and dynamic properties of seismic wave propagation in a complex three-dimensional Earth, involving topography, heterogeneity and the most general anisotropy defined by 21 spatially-dependent elastic moduli. We will develop 2D/3D ray-tracing methods for anisotropic traveltime tomography, 2.5D/3D frequency-domain spectral element met ....Seismic wave modelling and inversion for the most general 3-D anisotropic media. Advanced numerical techniques will be developed and applied to simulate the kinematic and dynamic properties of seismic wave propagation in a complex three-dimensional Earth, involving topography, heterogeneity and the most general anisotropy defined by 21 spatially-dependent elastic moduli. We will develop 2D/3D ray-tracing methods for anisotropic traveltime tomography, 2.5D/3D frequency-domain spectral element methods for full waveform inversion of observational data, and make all these techniques applicable for subsurface imaging under various classes of anisotropy in the Earth. Results will be important for petroleum exploration as well as earthquake seismology and probing the structure of the Earth's deep interior.Read moreRead less