Gravitational Constraints on the Earth's Inner Core Differential Rotation

Autor: Hugo Lecomte, Séverine Rosat, Mioara Mandea, Mathieu Dumberry

Publikováno v: Geophysical Research Letters, Vol 50, Iss 23, Pp n/a-n/a (2023)

Abstract The differential axial rotation of the solid inner core (IC) is suggested by seismic observations and expected from core dynamics models. A rotation of the IC by an angle α takes its degree 2, order 2 topography (peak‐to‐peak amplitude

Externí odkaz: https://doaj.org/article/ba63cd986f8941a898d65fc646885c7d

Detections of a 6-year cycle in the Earth system

Autor: Julia Pfeffer, Anny Cazenave, Séverine Rosat, Mioara Mandea, Véronique Dehant, Lorena Moreira, Anne Barnoud

A cycle of about 6 years has long been observed in the Earth’s magnetic field, length of day, dynamic oblateness, polar motions and surface displacements and attributed to dynamical processes occurring in the core and at the core mantle boundary. R

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::083b460c285e6217b234dbe2522a59d4
https://doi.org/10.5194/egusphere-egu23-7746

The limited contribution from outer core dynamics to global deformations at the Earth’s surface

Autor: Séverine Rosat, Mathieu Dumberry, Nicolas Gillet

Publikováno v: Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), 2020, ⟨10.1093/gji/ggaa448⟩

SUMMARYPlanetary scale interannual deformations of the Earth’s surface, of millimetric amplitude, have recently been related to both geomagnetic field changes and motion within the fluid outer core. We calculate the temporal variations of the dynam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79c37a6df1cf35abc144f9b855d33b23
https://doi.org/10.1093/gji/ggaa448

Groundwater monitoring and characterization by a vertical dipole of superconducting gravimeters in a karst aquifer, France

Autor: Séverine Rosat, Maxime Mouyen, Sandeep Kumar, Jacques Hinderer

Publikováno v: First International Meeting for Applied Geoscience & Energy Expanded Abstracts
First International Meeting for Applied Geoscience & Energy Expanded Abstracts, 2021, ⟨10.1190/segam2021-3582839.1⟩

International audience; The Earth's mass distribution is continuously changing due to physical processes taking place either beneath the subsurface or on the surface. Some of the primary sources for these mass variations are tides in the ocean and so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a264e69dc4a6d6c05edf3b8e10b5397c
https://doi.org/10.1190/segam2021-3582839.1

Erratum: Earth’s spheroidal motion induced by a gravitational wave in flat spacetime [Phys. Rev. D 100 , 044048 (2019)]

Autor: Josipa Majstorović, Séverine Rosat, Yves Rogister

Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2021, 103 (2), ⟨10.1103/PhysRevD.103.029901⟩

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ae15661608e84f1cc871ba50b1acf8e
https://doi.org/10.1103/physrevd.103.029901