Nathanaël Schaeffer

Publications

- 2024 -

  1. Geomagnetic dipole stability and zonal flow changes controlled by mantle heat flux heterogeneities
    T. Frasson, N. Schaeffer, H-C. Nataf, S. Labrosse
    submitted (2024)     [ arXiv ]
  2. cunuSHT: GPU Accelerated Spherical Harmonic Transforms on Arbitrary Pixelizations
    Sebastian Belkner, Adriaan J. Duivenvoorden, Julien Carron, Nathanael Schaeffer, Martin Reinecke
    submitted (2024)     [ arXiv ]
  3. Dynamic regimes in planetary cores: τ-ℓ diagrams
    Henri-Claude Nataf, Nathanaël Schaeffer
    Comptes Rendus. Géoscience (2024)     [ bib | doi | arXiv ]

- 2023 -

  1. The EU Center of Excellence for Exascale in Solid Earth (ChEESE): Implementation, results, and roadmap for the second phase
    Arnau Folch, Claudia Abril, Michael Afanasiev, ..., Nathanael Schaeffer, ...
    Future Generation Computer Systems (2023)     [ bib | doi ]
  2. Local estimation of quasi-geostrophic flows in Earth’s core
    T. Schwaiger, D. Jault, N. Gillet, N. Schaeffer, M. Mandea
    Geophysical Journal International (2023)     [ bib | doi ]

- 2022 -

  1. Sustaining Earth's magnetic dynamo
    Maylis Landeau, Alexandre Fournier, Henri-Claude Nataf, David Cébron, Nathanaël Schaeffer
    Nature Reviews Earth & Environment (2022)     [ bib | doi | HAL | pdf | supmat ]

- 2021 -

  1. Fluid dynamics experiments for planetary interiors
    Michael Le Bars, Ankit Barik, Fabian Burmann, Daniel P. Lathrop, Jérôme Noir, Nathanael Schaeffer, Santiago A. Triana
    Surveys in Geophysics (2021)     [ bib | doi | HAL ]
  2. The Effects of Robin Boundary Condition on Thermal Convection in a Rotating Spherical Shell
    T. Clarte, N. Schaeffer, S. Labrosse, J. Vidal
    Journal of Fluid Mechanics (2021)     [ bib | doi | HAL | arXiv | pdf ]
  3. Mean zonal flows induced by weak mechanical forcings in rotating spheroids
    D. Cebron, J. Vidal, N. Schaeffer, A. Borderies, A. Sauret
    Journal of Fluid Mechanics (2021)     [ bib | doi | HAL | arXiv | pdf ]

- 2019 -

  1. Rotating double-diffusive convection in stably stratified planetary cores
    R. Monville, J. Vidal, D. Cébron, N. Schaeffer
    Geophysical Journal International (2019)     [ bib | doi | HAL | arXiv | pdf ]
  2. Turbulent convective lengthscale in planetary cores
    C. Guervilly, P. Cardin, N. Schaeffer
    Nature (2019)     [ bib | doi | HAL | arXiv | pdf ]
  3. Torsional Alfvén waves in a dipolar magnetic field: experiments and simulations
    Zahia Tigrine, Henri-Claude Nataf, Nathanaël Schaeffer, Philippe Cardin, Franck Plunian
    Geophysical Journal International (2019)     [ bib | doi | HAL ]
  4. Exponential integrators with parallel-in-time rational approximations for the shallow-water equations on the rotating sphere
    Martin Schreiber, Nathanaël Schaeffer, Richard Loft
    Parallel Computing (2019)     [ bib | doi | arXiv ]
  5. Precessing spherical shells: flows, dissipation, dynamo and the lunar core
    D. Cebron, R. Laguerre, J. Noir, N. Schaeffer
    Geophysical Journal International (2019)     [ bib | doi | HAL | arXiv | pdf | movie | dataset ]

- 2018 -

  1. Dynamic domains of the Derviche Tourneur sodium experiment: Simulations of a spherical magnetized Couette flow
    Elliot Kaplan, Henri-Claude Nataf, Nathanaël Schaeffer
    Physical Review Fluids (2018)     [ bib | doi | arXiv | pdf | movie2 | movie1 ]
  2. Magnetic fields driven by tidal mixing in radiative stars
    Jérémie Vidal, David Cébron, Nathanaël Schaeffer, Rainer Hollerbach
    Monthly Notices of the Royal Astronomical Society (2018)     [ bib | doi | HAL | arXiv | pdf ]

- 2017 -

  1. Subcritical thermal convection of liquid metals in a rapidly rotating sphere
    E. Kaplan, N. Schaeffer, J. Vidal, P. Cardin
    Physical Review Letters (2017)     [ bib | doi | arXiv | pdf | movie | data ]
  2. Turbulent geodynamo simulations: a leap towards Earth's core
    Nathanaël Schaeffer, Dominique Jault, Henri-Claude Nataf, Alexandre Fournier
    Geophysical Journal International (2017)     [ bib | doi | HAL | arXiv | pdf | cnrs-news | movie2 | movie1 ]

- 2016 -

  1. Frequency spectrum of the geomagnetic field harmonic coefficients from dynamo simulations
    Claire Bouligand, Nicolas Gillet, Dominique Jault, Nathanaël Schaeffer, Alexandre Fournier, Julien Aubert
    Geophysical Journal International (2016)     [ bib | doi | HAL | pdf ]
  2. Electrical conductivity of the lowermost mantle explains absorption of core torsional waves at the equator
    Nathanaël Schaeffer, Dominique Jault
    Geophysical Research Letters (2016)     [ bib | doi | HAL | arXiv | pdf ]
  3. Performance benchmarks for a next generation numerical dynamo model
    H. Matsui, E. Heien, J. Aubert, ..., N. Schaeffer, ...
    Geochemistry, Geophysics, Geosystems (2016)     [ bib | doi | HAL | pdf ]
  4. Can Core Flows inferred from Geomagnetic Field Models explain the Earth's Dynamo?
    Nathanaël Schaeffer, E Lora Silva, Maria A Pais
    Geophysical Journal International (2016)     [ bib | doi | HAL | arXiv | code ]

- 2015 -

  1. Quasi-geostrophic modes in the Earth's fluid core with an outer stably stratified layer
    Jérémie Vidal, Nathanaël Schaeffer
    Geophysical Journal International (2015)     [ bib | doi | HAL | arXiv | pdf | code ]
  2. 8.06 - Turbulence in the Core
    H.-C. Nataf, N. Schaeffer
    Treatise on Geophysics (Second Edition) (2015)     [ bib | doi | pdf ]
  3. Variability modes in core flows inverted from geomagnetic field models
    Maria A Pais, Anna L Morozova, Nathanaël Schaeffer
    Geophysical Journal International (2015)     [ bib | doi | HAL | arXiv | movie2 | movie1 ]

- 2014 -

  1. Turbulence Reduces Magnetic Diffusivity in a Liquid Sodium Experiment
    Simon Cabanes, Nathanaël Schaeffer, Henri-Claude Nataf
    Physical Review Letters (2014)     [ bib | doi | HAL | arXiv | pdf | erratum ]
    An inconsistence with the sign in front of beta is corrected in the erratum, also included in the latest hal and arXiv versions.
  2. Magnetic induction and diffusion mechanisms in a liquid sodium spherical Couette experiment
    Simon Cabanes, Nathanaël Schaeffer, Henri-Claude Nataf
    Physical Review E (2014)     [ bib | doi | HAL | arXiv | pdf ]
  3. Full sphere hydrodynamic and dynamo benchmarks
    P. Marti, N. Schaeffer, R. Hollerbach, D. Cébron, C. Nore, F. Luddens, J.-L. Guermond, J. Aubert, S. Takehiro, Y. Sasaki, Y.-Y. Hayashi, R. Simitev, F. Busse, S. Vantieghem, A. Jackson
    Geophysical Journal International (2014)     [ bib | doi | pdf ]

- 2013 -

  1. Modes and instabilities in magnetized spherical Couette flow
    Aldo Figueroa, Nathanaël Schaeffer, Henri-Claude Nataf, Denys Schmitt
    Journal of Fluid Mechanics (2013)     [ bib | doi | HAL | arXiv | movies ]
  2. Efficient spherical harmonic transforms aimed at pseudospectral numerical simulations
    Nathanaël Schaeffer
    Geochemistry, Geophysics, Geosystems (2013)     [ bib | doi | HAL | arXiv | pdf | code ]
    A few misprints have been corrected in the latest hal and arXiv versions.

- 2012 -

  1. Can a sinking metallic diapir generate a dynamo?
    Julien Monteux, Nathanaël Schaeffer, Hagay Amit, Philippe Cardin
    Journal of Geophysical Research: Planets (2012)     [ bib | doi | HAL | pdf ]
  2. On the reflection of Alfvén waves and its implication for Earth's core modeling
    Nathanaël Schaeffer, Dominique Jault, Philippe Cardin, Marie Drouard
    Geophysical Journal International (2012)     [ bib | doi | HAL | arXiv | pdf ]
  3. A dynamo driven by zonal jets at the upper surface: Applications to giant planets
    Céline Guervilly, Philippe Cardin, Nathanaël Schaeffer
    Icarus (2012)     [ bib | doi | arXiv ]

- 2011 -

  1. On symmetry and anisotropy of Earth-core flows
    Nathanaël Schaeffer, Maria Alexandra Pais
    Geophysical Research Letters (2011)     [ bib | doi | HAL ]
  2. Rationale and geophysical evidence for quasi-geostrophic rapid dynamics within the Earth's outer core
    Nicolas Gillet, Nathanaël Schaeffer, Dominique Jault
    Physics of the Earth and Planetary Interiors (2011)     [ bib | doi | HAL ]
    Many misprints have been introduced by Elsevier in the version published in 2011, it has thus been republished correctly in 2012.

- 2010 -

  1. Nonlinear dynamics of the elliptic instability
    Nathanaël Schaeffer, Stéphane Le Dizès
    Journal of Fluid Mechanics (2010)     [ bib | doi | pdf | movie2 | movie1 ]

- 2008 -

  1. Stability of a pair of co-rotating vortices with axial flow
    Clément Roy, Nathanaël Schaeffer, Stéphane Le Dizès, Mark Thompson
    Physics of Fluids (2008)     [ bib | doi | pdf ]

- 2006 -

  1. Quasi-geostrophic kinematic dynamos at low magnetic Prandtl number
    Nathanaël Schaeffer, Philippe Cardin
    Earth and Planetary Science Letters (2006)     [ bib | doi | HAL ]

- 2005 -

  1. Rossby-wave turbulence in a rapidly rotating sphere
    Nathanaël Schaeffer, Philippe Cardin
    Nonlinear Processes in Geophysics (2005)     [ bib | doi | pdf ]
  2. Quasigeostrophic model of the instabilities of the Stewartson layer in flat and depth-varying containers
    Nathanaël Schaeffer, Philippe Cardin
    Physics of Fluids (2005)     [ bib | doi | HAL ]

- 2001 -

  1. Interaction of rising and sinking mantle plumes
    Nathanaël Schaeffer, Michael Manga
    Geophysical Research Letters (2001)     [ bib | doi | pdf ]