Reference : Magnetopause Boundary Normal Analysis at Jupiter and Saturn: Evidence of Kelvin Hemho...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Magnetopause Boundary Normal Analysis at Jupiter and Saturn: Evidence of Kelvin Hemholtz Vorticies
Stauffer, Blake Hughes mailto [University of Alaska Fairbanks > > > >]
Delamere, Peter A [University of Alaska Fairbanks > > > >]
Ma, Xuanye [University of Alaska Fairbanks > > > >]
Otto, Antonius [University of Alaska Fairbanks > > > >]
Bonfond, Bertrand mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
American Geophysical Union Fall Meeting 2013
du 9 décembre au 13 décembre 2013
American Geophysical Union
San Francisco
[en] Jupiter ; Saturn ; Kelvin Hemholtz instability ; Magnetopause ; LISRI
[en] Identification of surface waves and Kelvin Hemholtz (KH) vorticies at the magnetopause boundary at Jupiter and Saturn is critical to understanding interaction between the solar wind and their planetary magnetospheres. The rapid rotation of those planets coincides with a co-rotating plasma that creates an asymmetry between the formation and evolution of surface waves on either side of the sub-solar point. Minimum variance analysis and other techniques are performed on hundreds of select crossings of Saturn's magnetopause from 2004 to 2012
by the Cassini spacecraft and 47 crossings at Jupiter's magnetopause by the Galileo spacecraft. It is compared to the boundary normals of a simple magnetopause model. The wide range in angular difference between the model and the analysis is evidence of the presence of KH instability vorticies at the magnetopause boundary. Furthermore, boundary crossings from the magnetosheath into the magnetosphere on the dusk flanks are dominated by shallower angles, consistent with MHD simulations of variable shear flows on the dayside magnetopause
Liège Space Research Institute - LiSRI

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