Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1829k&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 13, p. 1829-1832
Physics
8
Ionosphere, Ionosphere: Auroral Ionosphere, Ionosphere: Ionospheric Dynamics, Ionosphere: Plasma Waves And Instabilities
Scientific paper
Recent studies indicate that the vertical velocity of F region ion upwellings cannot be explained by frictional heating in the horizontal plane alone but requires additional energization sources. Processes involving velocity shear have recently been put forward as alternate mechanisms that can provide the energization in regions of smaller convection speeds. Studies show that structured flows can also give rise to significant upwelling of ions by seeding plasma waves that can potentially cause ion heating while Joule heating is relatively small. We provide a statistical analysis of the Dynamics Explorer 2 vertical and horizontal ion drift measurements that show further evidence for the significance of plasma wave energization process in regions of varying levels of Joule heating.
Heelis Roderick A.
Kivanç Ö.
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