Zobrazeno 1 - 10 of 74 pro vyhledávání: '"Dominique Jault"'
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Akademický článek
Temporal resolution of internal magnetic field modes from satellite data
Autor: João Domingos, Maria Alexandra Pais, Dominique Jault, Mioara Mandea
Publikováno v: Earth, Planets and Space, Vol 71, Iss 1, Pp 1-17 (2019)
Abstract We aim to obtain a modal decomposition of the internal geomagnetic field. In order to do so, we perform a principal component analysis of two virtual observatory datasets, with 4-month sampling time, from the CHAMP (2001–2009) and Swarm (2
Externí odkaz: https://doaj.org/article/6d4553d2923f4113a1c01de77c18db6d
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3
Tangential stress at the core–mantle interface
Autor: Dominique Jault
Publikováno v: Geophysical Journal International
Geophysical Journal International, 2020, 221 (2), pp.951-967. ⟨10.1093/gji/ggaa048⟩
Geophysical Journal International, Oxford University Press (OUP), 2020, 221 (2), pp.951-967. ⟨10.1093/gji/ggaa048⟩
SUMMARY Fluctuations in the rotation rate of the solid Earth over periods from 5 to 100 yr result from exchanges of angular momentum between the fluid outer core and the solid mantle. The coupling mechanism mediating angular momentum transfer is not
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1de02805df4236c283cd857c957e8f59
https://doi.org/10.1093/gji/ggaa048
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4
A Dynamical Prospective on Interannual Geomagnetic Field Changes
Autor: N. Gillet, R. Angappan, Dominique Jault, Felix Gerick
Publikováno v: Surveys in Geophysics
Surveys in Geophysics, Springer Verlag (Germany), 2021, ⟨10.1007/s10712-021-09664-2⟩
Surveys in Geophysics, 2021, ⟨10.1007/s10712-021-09664-2⟩
Abstract Geomagnetic observations from satellites have highlighted interannual variations in the rate of change of the magnetic field originating from Earth’s core. Downward continued to the core surface, these variations primarily show up in the e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ce348259e4e4aba84a47c774d0e8d66
https://hal.archives-ouvertes.fr/hal-03425673/file/2021_surv_geophys_gillet_etal.pdf
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5
Temporal resolution of internal magnetic field modes from satellite data
Autor: Dominique Jault, João Domingos, Maria Alexandra Pais, Mioara Mandea
Publikováno v: Earth, Planets and Space, Vol 71, Iss 1, Pp 1-17 (2019)
Earth Planets and Space
Earth Planets and Space, Springer/Terra Scientific Publishing Company, 2019, 71 (1), ⟨10.1186/s40623-018-0983-5⟩
Earth Planets and Space, 2019, 71 (1), ⟨10.1186/s40623-018-0983-5⟩
International audience; We aim to obtain a modal decomposition of the internal geomagnetic field. In order to do so, we perform a principal component analysis of two virtual observatory datasets, with 4-month sampling time, from the CHAMP (2001-2009)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fef7e2fb68625f8ea031793d31779d2e
http://link.springer.com/article/10.1186/s40623-018-0983-5
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6
Fast (non-)diffusive Quasi-Geostrophic Magneto-Coriolis Modes in the Earth's core
Autor: Felix Gerick, Dominique Jault, Jerome Noir
Fast changes of Earth's magnetic field could be explained by inviscid and diffusion-less quasi-geostrophic (QG) Magneto-Coriolis modes. We present a hybrid QG model with columnar flows and three-dimensional magnetic fields and find modes with periods
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f305a2ecc17222ff63322369b18de71
https://doi.org/10.5194/egusphere-egu21-2176
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7
Fast Quasi-Geostrophic Magneto-Coriolis Modes in the Earth's core
Autor: Felix Gerick, Dominique Jault, Jerome Noir
Publikováno v: Geophysical Research Letters
Geophysical Research Letters, 2021, 48, pp.e2020GL090803. ⟨10.1029/2020GL090803⟩
Geophysical Research Letters, American Geophysical Union, 2021, 48, pp.e2020GL090803. ⟨10.1029/2020GL090803⟩
Geophysical Research Letters, 48 (4)
Fast changes of Earth's magnetic field could be explained by inviscid and diffusion‐less quasi‐geostrophic (QG) Magneto‐Coriolis modes. We present a hybrid QG model with columnar flows and three‐dimensional magnetic fields and find modes with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f7307e9f7d939578077ed5b83e7b469
http://arxiv.org/abs/2101.01493
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8
Pressure torque of torsional Alfvén modes acting on an ellipsoidal mantle
Autor: Felix Gerick, Dominique Jault, Jerome Noir, Jérémie Vidal
Publikováno v: Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2020, 222 (1), pp.338-351. ⟨10.1093/gji/ggaa166⟩
Geophysical Journal International, 222 (1)
Geophysical Journal International, 2020, 222 (1), pp.338-351. ⟨10.1093/gji/ggaa166⟩
We investigate the pressure torque between the fluid core and the solid mantle arising from magnetohydrodynamic modes in a rapidly rotating planetary core. A two-dimensional reduced model of the core fluid dynamics is developed to account for the non
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b3ea3e1cb5105ff6f4c72df1b1165e8
https://eprints.whiterose.ac.uk/159435/1/ggaa166.pdf
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9
Planetary gyre, time-dependent eddies, torsional waves, and equatorial jets at the Earth's core surface
Autor: Christopher C. Finlay, Dominique Jault, Nicolas Gillet
Publikováno v: Journal of Geophysical Research: Solid Earth. 120:3991-4013
We report a calculation of time-dependent quasi-geostrophic core flows for 1940-2010. Inverting recursively for an ensemble of solutions, we evaluate the main source of uncertainties, namely the model errors arising from interactions between unresolv
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5bdbc8f8396774dcab3e0a6efd9cfd7
https://doi.org/10.1002/2014jb011786
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