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[2013-12-10]


[2013-12-10]

One-way Modeling of Elastic Wave Propagation

Link to the AGU 2013 presentation on a new, computationally efficient technique for numerical extrapolation of elastic wave-fields. The proposed method can be applied to a variety of problems, from global to exploration seismology.




[2013-04-30]


[2013-04-30]

On Static Earthquake Triggering

Is static stress transfer a significant contributor to earthquake triggering or the phenomenon is mostly dynamic? The referenced paper presents some results of inverting for spatially-heterogeneous source event slip from the distribution of presumed triggered events. Inverted slips matching known data may confirm static stress triggering as a plausible triggering mechanism (see the referenced paper)....display full article text


http://arxiv.org/abs/1304.7821


[2013-04-29]


[2013-04-29]

Efficient Computation of Functional Determinants

Functional determinants arise naturally in normalization of functional integrals. When efficient numeric or analytic methods for computing functional determinants are available, functional integration (i.e. Feynman path integral) may offer a computationally viable alternative to perturbative and asymptotic methods.

The referenced paper reviews methods for the efficient computation of functional determinants for 1D and radially-symmetric (Dunne, 2008) potentials, and discusses extension for arbitrary operators....display full article text


http://arxiv.org/abs/1304.0042


[2011-06-02]


[2011-06-02]

Efficient One-way Wave-equation Migration in Tilted Transvesally Isotropic Medium

Check out this extended abstract under the Technology section (click on the thumbnail on the left)



[2011-01-30]


[2011-01-30]

Fast FD Wave Propagation Modelling in Anisotropic Media

Click on the thumbnail on the left to see the results of a new wave propagation finite-difference modelling algorithm for Tilted Transversally Isotropic (TTI) media. The method rivals the performance of isotropic finite-difference modelling methods while almost completely removing the shear artifact arising due to the conversion of Tsvankin's formula into a two-equation hyperbolic system. The presented results include applications when the model is homogeneous, smooth heterogeneous and heterogeneous with arbitrary sharp contrasts.



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