Coal seismic diffraction fault imaging: Results from numerical modelling

Coal seismic diffraction fault imaging: Results from numerical modelling

Modern underground coal mining requires certainty about geological faults and other structural features for safety reasons. Even a fault with a throw of a few metres can create safety issues and lead to costly delays in mine production. To ensure there are no unwelcome surprises concerning seam conditions during mining, seismic reflection surveys have been widely used by Australian coal mines, ...

From Geodetic Imaging of Seismic and Aseismic Fault Slip to Dynamic Modeling of the Seismic Cycle

Understanding the partitioning of seismic and aseismic fault slip is central to seismotectonics as it ultimately determines the seismic potential of faults. Thanks to advances in tectonic geodesy, it is now possible to develop kinematic models of the spatiotemporal evolution of slip over the seismic cycle and to determine the budget of seismic and aseismic slip. Studies of subduction zones and ...

Modelling Seismic Wave Propagation for Geophysical Imaging

Diffraction and seismic tomography

Diffraction tomography is formulated in such a way that the data ( t ravel t ime4r waveform perturbations) are related to the medium perturbations through the sum of two terms. The first term is the ray integral of ordinary tomography and involves only phase perturbations. The additional diffraction term involves both phase and amplitude perturbations. The diffraction term is linear in the grad...

2610588 Volumetric Fault Imaging based on Seismic Geometry Analysis

Computer-aided fault imaging and interpretation is a fundamental tool for subsurface structure characterization and modeling, and the existing methods are primarily based on seismic discontinuity analysis (e.g., coherence and semblance) that evaluates the lateral variation of waveform and/or amplitude. However, such attributes have a limited resolution on subtle faults without apparent displace...