Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Barucq, Hélène"'
This work is concerned with implementing the hybridizable discontinuous Galerkin (HDG) method to solve the linear anisotropic elastic equation in the frequency domain. First-order formulation with the compliance tensor and Voigt notation are employed
Externí odkaz:
http://arxiv.org/abs/2403.02862
Solar oscillations can be modeled by Galbrun's equation which describes Lagrangian wave displacement in a self-gravitating stratified medium. For spherically symmetric backgrounds, we construct an algorithm to compute efficiently and accurately the c
Externí odkaz:
http://arxiv.org/abs/2401.17080
Publikováno v:
A&A 669, A89 (2023)
Helioseismic holography is a useful method to detect active regions on the Sun's far side and improve space weather forecasts. We aim to improve helioseismic holography by using a clear formulation of the problem, an accurate forward solver in the fr
Externí odkaz:
http://arxiv.org/abs/2211.07219
Given a point configuration A, we uncover a connection between polynomial-reproducing spline spaces over subsets of conv(A) and fine zonotopal tilings of the zonotope Z(V) associated to the corresponding vector configuration. This link directly gener
Externí odkaz:
http://arxiv.org/abs/2006.10307
Autor:
Faucher, Florian, Alessandrini, Giovanni, Barucq, Hélène, de Hoop, Maarten V., Gaburro, Romina, Sincich, Eva
The quantitative reconstruction of sub-surface Earth properties from the propagation of waves follows an iterative minimization of a misfit functional. In marine seismic exploration, the observed data usually consist of measurements of the pressure f
Externí odkaz:
http://arxiv.org/abs/1907.09163
We study the seismic inverse problem for the recovery of subsurface properties in acoustic media. In order to reduce the ill-posedness of the problem, the heterogeneous wave speed parameter to be recovered is represented using a limited number of coe
Externí odkaz:
http://arxiv.org/abs/1903.08991
Publikováno v:
A&A 620, A136 (2018)
Helioseismic holography is an imaging technique used to study heterogeneities and flows in the solar interior from observations of solar oscillations at the surface. Holograms contain noise due to the stochastic nature of solar oscillations. We provi
Externí odkaz:
http://arxiv.org/abs/1810.00402
Publikováno v:
A&A 616, A156 (2018)
The interpretation of helioseismic measurements, such as wave travel-time, is based on the computation of kernels that give the sensitivity of the measurements to localized changes in the solar interior. These are computed using the ray or the Born a
Externí odkaz:
http://arxiv.org/abs/1805.06141
Publikováno v:
In Journal of Computational Physics 15 December 2022 471
Publikováno v:
In Journal of Computational Physics 1 November 2022 468