Russell J. Hewett
computational scientist
Publications
Weight-adjusted discontinuous Galerkin methods: curvilinear meshes
Traditional time-domain discontinuous Galerkin (DG) methods result in large storage costs at high orders of approximation due to the …
Weight-adjusted discontinuous Galerkin methods: wave propagation in heterogeneous media
Time-domain discontinuous Galerkin (DG) methods for wave propagation require accounting for the inversion of dense elemental mass …
Reduced storage nodal discontinuous Galerkin methods on semi-structured prismatic meshes
We present a high order time-domain nodal discontinuous Galerkin method for wave problems on hybrid meshes consisting of both wedge and …
Optimized finite difference coefficients for the Helmholtz equation
Optimized finite difference (OFD) coefficients are often used to minimize numerical dispersion and to improve accuracy in finite …
PySIT: Python Seismic Imaging Toolbox
The Python Seismic Imaging Toolbox (PySIT) is research-scale platform for developing and prototyping numerical methods and algorithms …
High-dimensional wave atoms and compression of seismic data sets
Wave atoms are a low-redundancy alternative to curvelets, suitable for high-dimensional seismic data processing. This abstract extends …
Efficient stochastic Hessian estimation for full waveform inversion
In this abstract we present a method that allows arbitrary elements of the approximate Hessian to be estimated simultaneously. …