Search Results - "Mulder, W A"

Frequency-domain finite-difference amplitude-preserving migration by Plessix, R.-E., Mulder, W. A.

“…A migration algorithm based on the least-squares formulation will find the correct reflector amplitudes if proper migration weights are applied. The migration…”
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Performance of old and new mass‐lumped triangular finite elements for wavefield modelling by Mulder, W. A.

“…Finite elements with mass lumping allow for explicit time stepping when modelling wave propagation and can be more efficient than finite differences in complex…”
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Temporal dispersion correction for wave‐propagation modelling with a series approach by Mulder, W. A.

“…Temporal dispersion correction of second‐order finite‐difference time stepping for numerical wave propagation modelling exploits the fact that the discrete…”
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Stationary‐phase analysis of time‐shift extended imaging in a constant‐velocity model by Mulder, W. A.

“…To estimate the depth errors in a subsurface model obtained from the inversion of seismic data, the stationary‐phase approximation in a two‐dimensional…”
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Unisolvence of Symmetric Node Patterns for Polynomial Spaces on the Simplex by Mulder, W. A.

“…Finite elements with polynomial basis functions on the simplex with a symmetric distribution of nodes should have a unique polynomial representation…”
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A parallel multigrid-based preconditioner for the 3D heterogeneous high-frequency Helmholtz equation by Riyanti, C.D., Kononov, A., Erlangga, Y.A., Vuik, C., Oosterlee, C.W., Plessix, R.-E., Mulder, W.A.

“…We investigate the parallel performance of an iterative solver for 3D heterogeneous Helmholtz problems related to applications in seismic wave propagation. For…”
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How to choose a subset of frequencies in frequency-domain finite-difference migration by Mulder, W. A., Plessix, R.-E.

“…Finite-difference migration with the two-way wave equation can be accelerated by an order of magnitude if the frequency domain rather than the time domain is…”
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Quality Characteristics of Frozen Broiler Breast Meat Pretreated with Increasing Concentrations of Sodium Chloride by Massimiliano Petracci, Simone Rimini, Roel W. A. W. Mulder, Claudio Cavani

“…A study was conducted in order to investigate quality traits and sensory properties of frozen broiler breast meat pretreated with increasing concentration…”
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Rigorous redatuming by Mulder, W. A.

“…Redatuming is an operation on seismic data that translates the positions of sources or receivers, or both. Here, redatuming is applied to shift sources and…”
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A correlation-based misfit criterion for wave-equation traveltime tomography by Van Leeuwen, T., Mulder, W. A.

“…Wave-equation traveltime tomography tries to obtain a subsurface velocity model from seismic data, either passive or active, that explains their traveltimes. A…”
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Numerical noise suppression for wave propagation with finite elements in first-order form by an extended source term by Shamasundar, R, Mulder, W A

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Measured electric responses of unconsolidated layered and brine-saturated sand and sand-clay packs under continuous fluid flow conditions by Kavian, M., Slob, E.C., Mulder, W.A.

“…We have investigated the effects of pore solution concentration on the complex electric response of two different unconsolidated samples, layered sand and…”
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A feasibility study of land CSEM reservoir monitoring in a complex 3-D model by Wirianto, M., Mulder, W. A., Slob, E. C.

“…We carried out a series of numerical simulations in a complex 3-D resistivity model to investigate the feasibility of using controlled-source electromagnetics…”
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Research Note: On the error behaviour of force and moment sources in simplicial spectral finite elements by Mulder, W.A.

“…ABSTRACT The representation of a force or moment point source in a spectral finite‐element code for modelling elastic wave propagation becomes fundamentally…”
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Dispersion Properties of Explicit Finite Element Methods for Wave Propagation Modelling on Tetrahedral Meshes by Geevers, S., Mulder, W. A., van der Vegt, J. J. W.

“…We analyse the dispersion properties of two types of explicit finite element methods for modelling acoustic and elastic wave propagation on tetrahedral meshes,…”
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Research Note: A workaround for the corner problem in numerically exact non‐reflecting boundary conditions by Mulder, W.A.

“…ABSTRACT Simulations of wave propagation in the Earth usually require truncation of a larger domain to the region of interest to keep computational cost…”
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Subsurface offset behaviour in velocity analysis with extended reflectivity images by Mulder, W.A.

“…ABSTRACT Migration velocity analysis with the constant‐density acoustic wave equation can be accomplished by the focusing of extended migration images,…”
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Epidemiology of Campylobacter spp. at two Dutch broiler farms by Jacobs-Reitsma, W. F., Van de Giessen, A. W., Bolder, N. M., Mulder, R. W. A. W.

“…Broiler flocks on two Dutch poultry farms were screened weekly for the presence of Campylobacter in fresh caecal droppings during eight consecutive production…”
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Applying essentially non-oscillatory interpolation to controlled-source electromagnetic modelling by Wirianto, M., Mulder, W.A., Slob, E.C.

“…ABSTRACT Modelling and inversion of controlled‐source electromagnetic (CSEM) fields requires accurate interpolation of modelled results near strong resistivity…”
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Separation-of-variables as a preconditioner for an iterative Helmholtz solver by Plessix, R.E, Mulder, W.A

“…A preconditioned iterative method based on separation-of-variables for solving the Helmholtz equation in an inhomogeneous medium is tested. The preconditioner…”
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