Martin Almquist

Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Stiernström, Vidar; Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2024

• DOI för Adjoint-based inversion for stress and frictional parameters in earthquake modeling
• Ladda ner fulltext (pdf) av Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Tazhimbetov, Nurbek; Almquist, Martin; Werpers, Jonatan; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2023

• DOI för Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Bader, Milad; Almquist, Martin; Dunham, Eric M.

Ingår i Geophysics, 2023

• DOI för Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients

Stiernström, Vidar; Almquist, Martin; Mattsson, Ken

Ingår i Journal of Computational Physics, 2023

• DOI för Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients
• Ladda ner fulltext (pdf) av Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients

Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models

Coppess, Katherine R.; Dunham, Eric M.; Almquist, Martin

Ingår i Journal of Geophysical Research - Solid Earth, 2022

• DOI för Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models
• Ladda ner fulltext (pdf) av Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models

Elastic wave propagation in anisotropic solids using energy-stable finite differences with weakly enforced boundary and interface conditions

Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2021

• DOI för Elastic wave propagation in anisotropic solids using energy-stable finite differences with weakly enforced boundary and interface conditions

Non-stiff boundary and interface penalties for narrow-stencil finite difference approximations of the Laplacian on curvilinear multiblock grids

Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2020

• DOI för Non-stiff boundary and interface penalties for narrow-stencil finite difference approximations of the Laplacian on curvilinear multiblock grids

Order-preserving interpolation for summation-by-parts operators at nonconforming grid interfaces

Almquist, Martin; Wang, Siyang; Werpers, Jonatan

Ingår i SIAM Journal on Scientific Computing, 2019

• DOI för Order-preserving interpolation for summation-by-parts operators at nonconforming grid interfaces

Poroelastic effects destabilize mildly rate-strengthening friction to generate stable slow slip pulses

Heimisson, Elias R.; Dunham, Eric M.; Almquist, Martin

Ingår i Journal of the mechanics and physics of solids, s. 262-279, 2019

• DOI för Poroelastic effects destabilize mildly rate-strengthening friction to generate stable slow slip pulses

Multilevel local time-stepping methods of Runge–Kutta-type for wave equations

Almquist, Martin; Mehlin, Michaela

Ingår i SIAM Journal on Scientific Computing, 2017

• DOI för Multilevel local time-stepping methods of Runge–Kutta-type for wave equations

High-fidelity numerical solution of the time-dependent Dirac equation

Almquist, Martin; Mattsson, Ken; Edvinsson, Tomas

Ingår i Journal of Computational Physics, s. 86-103, 2014

• DOI för High-fidelity numerical solution of the time-dependent Dirac equation

Optimal diagonal-norm SBP operators

Mattsson, Ken; Almquist, Martin; Carpenter, Mark H.

Ingår i Journal of Computational Physics, s. 91-111, 2014

• DOI för Optimal diagonal-norm SBP operators

Approximating Moving Point Sources in Hyperbolic Partial Differential Equations

Ljungberg Rydin, Ylva; Almquist, Martin

Ingår i Journal of Scientific Computing, 2025

• DOI för Approximating Moving Point Sources in Hyperbolic Partial Differential Equations
• Ladda ner fulltext (pdf) av Approximating Moving Point Sources in Hyperbolic Partial Differential Equations

Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Stiernström, Vidar; Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2024

• DOI för Adjoint-based inversion for stress and frictional parameters in earthquake modeling
• Ladda ner fulltext (pdf) av Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Incorporating Full Elastodynamic Effects and Dipping Fault Geometries in Community Code Verification Exercises for Simulations of Earthquake Sequences and Aseismic Slip (SEAS)

Erickson, Brittany A.; Jiang, Junle; Lambert, Valere; Barbot, Sylvain D. et al.

Ingår i Bulletin of The Seismological Society of America (BSSA), s. 499-523, 2023

• DOI för Incorporating Full Elastodynamic Effects and Dipping Fault Geometries in Community Code Verification Exercises for Simulations of Earthquake Sequences and Aseismic Slip (SEAS)

Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Tazhimbetov, Nurbek; Almquist, Martin; Werpers, Jonatan; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2023

• DOI för Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Bader, Milad; Almquist, Martin; Dunham, Eric M.

Ingår i Geophysics, 2023

• DOI för Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Approximating Moving Point Sources in Hyperbolic Partial Differential Equations

Ljungberg Rydin, Ylva; Almquist, Martin

Ingår i Journal of Scientific Computing, 2025

• DOI för Approximating Moving Point Sources in Hyperbolic Partial Differential Equations
• Ladda ner fulltext (pdf) av Approximating Moving Point Sources in Hyperbolic Partial Differential Equations

Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Stiernström, Vidar; Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2024

• DOI för Adjoint-based inversion for stress and frictional parameters in earthquake modeling
• Ladda ner fulltext (pdf) av Adjoint-based inversion for stress and frictional parameters in earthquake modeling

Incorporating Full Elastodynamic Effects and Dipping Fault Geometries in Community Code Verification Exercises for Simulations of Earthquake Sequences and Aseismic Slip (SEAS)

Erickson, Brittany A.; Jiang, Junle; Lambert, Valere; Barbot, Sylvain D. et al.

Ingår i Bulletin of The Seismological Society of America (BSSA), s. 499-523, 2023

• DOI för Incorporating Full Elastodynamic Effects and Dipping Fault Geometries in Community Code Verification Exercises for Simulations of Earthquake Sequences and Aseismic Slip (SEAS)

Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Tazhimbetov, Nurbek; Almquist, Martin; Werpers, Jonatan; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2023

• DOI för Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and interface conditions

Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Bader, Milad; Almquist, Martin; Dunham, Eric M.

Ingår i Geophysics, 2023

• DOI för Modeling and inversion in acoustic-elastic coupled media using energy-stable summation-by-parts operators

Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients

Stiernström, Vidar; Almquist, Martin; Mattsson, Ken

Ingår i Journal of Computational Physics, 2023

• DOI för Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients
• Ladda ner fulltext (pdf) av Boundary-optimized summation-by-parts operators for finite difference approximations of second derivatives with variable coefficients

Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models

Coppess, Katherine R.; Dunham, Eric M.; Almquist, Martin

Ingår i Journal of Geophysical Research - Solid Earth, 2022

• DOI för Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models
• Ladda ner fulltext (pdf) av Ultra and Very Long Period Seismic Signatures of Unsteady Eruptions Predicted From Conduit Flow Models

Elastic wave propagation in anisotropic solids using energy-stable finite differences with weakly enforced boundary and interface conditions

Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2021

• DOI för Elastic wave propagation in anisotropic solids using energy-stable finite differences with weakly enforced boundary and interface conditions

Non-stiff boundary and interface penalties for narrow-stencil finite difference approximations of the Laplacian on curvilinear multiblock grids

Almquist, Martin; Dunham, Eric M.

Ingår i Journal of Computational Physics, 2020

• DOI för Non-stiff boundary and interface penalties for narrow-stencil finite difference approximations of the Laplacian on curvilinear multiblock grids

Order-preserving interpolation for summation-by-parts operators at nonconforming grid interfaces

Almquist, Martin; Wang, Siyang; Werpers, Jonatan

Ingår i SIAM Journal on Scientific Computing, 2019

• DOI för Order-preserving interpolation for summation-by-parts operators at nonconforming grid interfaces

Poroelastic effects destabilize mildly rate-strengthening friction to generate stable slow slip pulses

Heimisson, Elias R.; Dunham, Eric M.; Almquist, Martin

Ingår i Journal of the mechanics and physics of solids, s. 262-279, 2019

• DOI för Poroelastic effects destabilize mildly rate-strengthening friction to generate stable slow slip pulses

Tsunami Wavefield Reconstruction and Forecasting Using the Ensemble Kalman Filter

Yang, Yuyun; Dunham, Eric M.; Barnier, Guillaume; Almquist, Martin

Ingår i Geophysical Research Letters, s. 853-860, 2019

• DOI för Tsunami Wavefield Reconstruction and Forecasting Using the Ensemble Kalman Filter

Boundary optimized diagonal-norm SBP operators

Mattsson, Ken; Almquist, Martin; van der Weide, Edwin

Ingår i Journal of Computational Physics, s. 1261-1266, 2018

• DOI för Boundary optimized diagonal-norm SBP operators

Multilevel local time-stepping methods of Runge–Kutta-type for wave equations

Almquist, Martin; Mehlin, Michaela

Ingår i SIAM Journal on Scientific Computing, 2017

• DOI för Multilevel local time-stepping methods of Runge–Kutta-type for wave equations

A high-order accurate embedded boundary method for first order hyperbolic equations

Mattsson, Ken; Almquist, Martin

Ingår i Journal of Computational Physics, s. 255-279, 2017

• DOI för A high-order accurate embedded boundary method for first order hyperbolic equations

Realization of adiabatic Aharonov–Bohm scattering with neutrons

Sjöqvist, Erik; Almquist, Martin; Mattsson, Ken; Gürkan, Zeynep Nilhan et al.

Ingår i Physical Review A. Atomic, Molecular, and Optical Physics, 2015

• DOI för Realization of adiabatic Aharonov–Bohm scattering with neutrons

High-fidelity numerical solution of the time-dependent Dirac equation

Almquist, Martin; Mattsson, Ken; Edvinsson, Tomas

Ingår i Journal of Computational Physics, s. 86-103, 2014

• DOI för High-fidelity numerical solution of the time-dependent Dirac equation

Optimal diagonal-norm SBP operators

Mattsson, Ken; Almquist, Martin; Carpenter, Mark H.

Ingår i Journal of Computational Physics, s. 91-111, 2014

• DOI för Optimal diagonal-norm SBP operators

Atmospheric sound propagation over large-scale irregular terrain

Almquist, Martin; Karasalo, Ilkka; Mattsson, Ken

Ingår i Journal of Scientific Computing, s. 369-397, 2014

• DOI för Atmospheric sound propagation over large-scale irregular terrain

A solution to the stability issues with block norm summation by parts operators

Mattsson, Ken; Almquist, Martin

Ingår i Journal of Computational Physics, s. 418-442, 2013

• DOI för A solution to the stability issues with block norm summation by parts operators

Efficient Simulation of Wave Phenomena

Almquist, Martin

2017

• Ladda ner fulltext (pdf) av Efficient Simulation of Wave Phenomena

Unsteady simulations of rotor stator interactions using SBP-SAT schemes: Status and challenges

Giangaspero, Giorgio; Almquist, Martin; Mattsson, Ken; van der Weide, Edwin

Ingår i Spectral and High Order Methods for Partial Differential Equations, s. 247-255, 2015

• DOI för Unsteady simulations of rotor stator interactions using SBP-SAT schemes: Status and challenges

Stable and accurate wave simulations in complex geometries and discontinuous media

Mattsson, Ken; Almquist, Martin; Engblom, Stefan

Ingår i Proc. 11th International Conference on Mathematical and Numerical Aspects of Waves, s. 201-202, 2013

Stable and accurate simulation of phenomena in relativistic quantum mechanics

Almquist, Martin; Mattsson, Ken; Edvinsson, Tomas

Ingår i Proc. 11th International Conference on Mathematical and Numerical Aspects of Waves, s. 213-214, 2013

Optimal diagonal-norm SBP operators

Mattsson, Ken; Almquist, Martin; Carpenter, Mark H.

2013

• Ladda ner fulltext (pdf) av Optimal diagonal-norm SBP operators

Atmospheric sound propagation over large-scale irregular terrain

Almquist, Martin; Karasalo, Ilkka; Mattsson, Ken

2013

• Ladda ner fulltext (pdf) av Atmospheric sound propagation over large-scale irregular terrain