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- research-articleMay 2022
A Non-perturbative Approach to Computing Seismic Normal Modes in Rotating Planets
Journal of Scientific Computing (JSCI), Volume 91, Issue 2https://doi.org/10.1007/s10915-022-01836-5AbstractA continuous Galerkin method based approach is presented to compute the seismic normal modes of rotating planets. Special care is taken to separate out the essential spectrum in the presence of a fluid outer core using a polynomial filtering ...
- research-articleJanuary 2001
Checkpointing Schemes for Adjoint Codes: Application to the Meteorological Model Meso-NH
SIAM Journal on Scientific Computing (SISC), Volume 22, Issue 6Pages 2135–2151https://doi.org/10.1137/S1064827598343735The adjoint code of a nonlinear computer model calculates gradients along a trajectory that has to be known at integration time. When the storage of the whole trajectory requires too large an amount of memory, the calculation of the adjoint code is split ...
- research-articleSeptember 1998
Circumventing Storage Limitations in Variational Data Assimilation Studies
SIAM Journal on Scientific Computing (SISC), Volume 19, Issue 5Pages 1586–1605https://doi.org/10.1137/S1064827595285500An application of Pontryagin's maximum principle data assimilation is used to blend possibly incomplete or nonuniformly distributed spatio-temporal observational data into geophysical models. Used extensively in engineering control theory applications, ...