Modular and flexible spectral-element waveform modelling in two and three dimensions

M Afanasiev, C Boehm, M van Driel… - Geophysical Journal …, 2019 - academic.oup.com
In this paper, we present a series of mathematical abstractions for seismologically relevant
wave equations discretized using finite-element methods, and demonstrate how these …

Numerical dispersion mitigation neural network for seismic modeling

K Gadylshin, D Vishnevsky, K Gadylshina, V Lisitsa - Geophysics, 2022 - library.seg.org
We have developed a novel approach for seismic modeling combining conventional finite
differences with deep neural networks. The method includes the following steps. First, a …

Efficient time-domain 3D elastic and viscoelastic full-waveform inversion using a spectral-element method on flexible Cartesian-based mesh

PT Trinh, R Brossier, L Métivier, L Tavard, J Virieux - Geophysics, 2019 - library.seg.org
Viscoelastic full-waveform inversion is recognized as a challenging task for current
acquisition deployment at the crustal scale. We have developed an efficient formulation …

Numerical modeling of mechanical wave propagation

G Seriani, SP Oliveira - La Rivista del Nuovo Cimento, 2020 - Springer
The numerical modeling of mechanical waves is currently a fundamental tool for the study
and investigation of their propagation in media with heterogeneous physical properties …

Generalized multiscale finite-element method (GMsFEM) for elastic wave propagation in heterogeneous, anisotropic media

K Gao, S Fu, RL Gibson Jr, ET Chung… - Journal of Computational …, 2015 - Elsevier
It is important to develop fast yet accurate numerical methods for seismic wave propagation
to characterize complex geological structures and oil and gas reservoirs. However, the …

Combination of the discontinuous Galerkin method with finite differences for simulation of seismic wave propagation

V Lisitsa, V Tcheverda, C Botter - Journal of Computational Physics, 2016 - Elsevier
We present an algorithm for the numerical simulation of seismic wave propagation in models
with a complex near surface part and free surface topography. The approach is based on the …

Experimental and analytical study of xeon phi reliability

D Oliveira, L Pilla, N DeBardeleben… - Proceedings of the …, 2017 - dl.acm.org
We present an in-depth analysis of transient faults effects on HPC applications in Intel Xeon
Phi processors based on radiation experiments and high-level fault injection. Besides …

3-D multiparameter full-waveform inversion for ocean-bottom seismic data using an efficient fluid–solid coupled spectral-element solver

J Cao, R Brossier, A Górszczyk… - Geophysical Journal …, 2022 - academic.oup.com
Ocean-bottom seismic acquisition systems deployed on the seabed give access to three-
component geophone data and hydrophone data. Compared with conventional streamer …

Reliability evaluation of mixed-precision architectures

FF dos Santos, C Lunardi, D Oliveira… - … Symposium on High …, 2019 - ieeexplore.ieee.org
Novel computing architectures offer the possibility to execute float point operations with
different precisions. The execution of reduced precision operations, when acceptable for …

Code-dependent and architecture-dependent reliability behaviors

V Fratin, D Oliveira, C Lunardi, F Santos… - 2018 48th Annual …, 2018 - ieeexplore.ieee.org
The increased need for computing capabilities and higher efficiency have stimulated
industries to make available in the market novel architectures with increased complexity …