Zobrazeno 1 - 10 of 62 pro vyhledávání: '"Stéphane Labrosse"'
1
Akademický článek
Stability of high-temperature salty ice suggests electrolyte permeability in water-rich exoplanet icy mantles
Autor: Jean-Alexis Hernandez, Razvan Caracas, Stéphane Labrosse
Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Hot cubic ice is shown to retain dissolved salt in its lattice, suggesting the mantle of water-rich exoplanets is more permeable to electrolytes than assumed, which has implications on its properties and on the element cycles inside such planets.
Externí odkaz: https://doaj.org/article/76ad07e31b954e1f92c3ba9fe889a11b
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2
Akademický článek
Low thermal conductivity of iron-silicon alloys at Earth’s core conditions with implications for the geodynamo
Autor: Wen-Pin Hsieh, Alexander F. Goncharov, Stéphane Labrosse, Nicholas Holtgrewe, Sergey S. Lobanov, Irina Chuvashova, Frédéric Deschamps, Jung-Fu Lin
Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Thermal conductivity of Earth’s core affects Earth’s thermal structure, evolution and dynamics. Based on thermal conductivity measurements of iron–silicon alloys at high pressure and temperature conditions, the authors here propose Earth’s in
Externí odkaz: https://doaj.org/article/2c166bda5360408e93d84a0dd524c207
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3
Akademický článek
Chemical Convection and Stratification in the Earth's Outer Core
Autor: Mathieu Bouffard, Gaël Choblet, Stéphane Labrosse, Johannes Wicht
Publikováno v: Frontiers in Earth Science, Vol 7 (2019)
Convection in the Earth's outer core is driven by buoyancy sources of both thermal and compositional origin. The thermal and compositional molecular diffusivities differ by several orders of magnitude, which can affect the dynamics in various ways. S
Externí odkaz: https://doaj.org/article/cbb6c86770674d939d6d47b90648099e
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4
Fully compressible convection for planetary mantles
Autor: Yanick Ricard, Thierry Alboussière, Stéphane Labrosse, Jezabel Curbelo, Fabien Dubuffet
Publikováno v: Geophysical Journal International
Geophysical Journal International, 2022, 230, pp.932-956. ⟨10.1093/gji/ggac102⟩
Geophysical Journal International, 2022, 230 (2), pp.932-956. ⟨10.1093/gji/ggac102⟩
SUMMARY The numerical simulations of convection inside the mantle of the Earth or of terrestrial planets have been based on approximate equations of fluid dynamics. A common approximation is the neglect of the inertia term which is certainly reasonab
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78fa6989fcfae0188b9b5f462a7c8847
https://doi.org/10.1093/gji/ggac102
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5
True polar wander and heat flux patterns at the core-mantle boundary in a mantle convection simulation
Autor: Thomas Frasson, Stéphane Labrosse, Henri-Claude Nataf, Nicolas Coltice
Publikováno v: eISSN
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
The core-mantle boundary (CMB) heat flux is an important variable of Earth's thermal evolution and dynamics. Seismic tomography enables access to seismic heterogeneities in the lower mantle, which can be related to present-day thermal heterogeneities
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::280a81be4b16a0fb98b6306a0d45b63d
https://doi.org/10.5194/egusphere-2022-1172
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6
Study of convection in high-pressure ice layers of large icy moons and implications for habitability
Autor: Laëtitia Lebec, Stéphane Labrosse, Adrien Morison, Paul J. Tackley
The existence of a high-pressure (HP) ice layer between the silicate core and the liquid ocean in large icy moons and ocean worlds is usually seen as a barrier to habitability, preventing a direct contact and therefore transfer of nutrients from the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a713e92280e82afffa4ce7a4b7a623d3
https://doi.org/10.5194/epsc2022-650
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7
A playground for compressible natural convection with a nearly uniform density
Autor: Thierry Alboussière, Jezabel Curbelo, Fabien Dubuffet, Stéphane Labrosse, Yanick Ricard
Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2022, 940, pp.A9. ⟨10.1017/jfm.2022.216⟩
In the quest to understand the basic universal features of compressible convection, one would like to disentangle genuine consequences of compression from spatial variations of transport properties. In the present work, we consider a very peculiar eq
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::538ef7d2c091b3b1551b466bbe2468a5
https://doi.org/10.1017/jfm.2022.216
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8
Low thermal conductivity of iron-silicon alloys at Earth’s core conditions with implications for the geodynamo
Autor: Irina Chuvashova, Alexander F. Goncharov, Frédéric Deschamps, Nicholas Holtgrewe, Jung-Fu Lin, Wen-Pin Hsieh, Sergey S. Lobanov, Stéphane Labrosse
Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Nature Communications
Nature Communications, 2020, 11, p. 469-489. ⟨10.1038/s41467-020-17106-7⟩
Earth’s core is composed of iron (Fe) alloyed with light elements, e.g., silicon (Si). Its thermal conductivity critically affects Earth’s thermal structure, evolution, and dynamics, as it controls the magnitude of thermal and compositional sourc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::483e3b48c85e84f4cd645138f51318e9
http://link.springer.com/article/10.1038/s41467-020-17106-7
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9
Numerical solutions of compressible convection with an infinite Prandtl number: comparison of the anelastic and anelastic liquid models with the exact equations
Autor: Thierry Alboussière, Stéphane Labrosse, F. Dubuffet, Yanick Ricard, Jezabel Curbelo, Lucia Duarte
Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
We developed a numerical method for the set of equations governing fully compressible convection in the limit of infinite Prandtl numbers. Reduced models have also been analysed, such as the anelastic approximation and the anelastic liquid approximat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::349f045a4f1d7eb64873439f10e17c6d
https://doi.org/10.1017/jfm.2019.420
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10
Sublimation-driven convection in Sputnik Planitia on Pluto
Autor: Adrien Morison, Stéphane Labrosse, Gaël Choblet
Publikováno v: Nature
Nature, 2021, 600, pp.419-423. ⟨10.1038/s41586-021-04095-w⟩
International audience; Sputnik Planitia is a nitrogen-ice-filled basin on Pluto1. Its polygonal surface patterns2 have been previously explained as a result of solid-state convection with either an imposed heat flow3 or a temperature difference with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99d1163d4228ec426dfea7034f53660f
https://pubmed.ncbi.nlm.nih.gov/34912087
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