Physics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3708105y&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 8, CiteID L08105
Physics
3
Ionosphere: Midlatitude Ionosphere, Ionosphere: Modeling And Forecasting, Ionosphere: Plasma Waves And Instabilities (2772)
Scientific paper
In order to study nighttime medium-scale traveling ionospheric disturbances (MSTIDs), we have developed a new midlatitude ionosphere electrodynamics coupling model (MIECO) which can model the coupling process between the E and F regions with dipole magnetic field lines. Using the new model, MSTID structure is reproduced from random perturbation on an Es layer by the coupled Perkins and sporadic-E (Es)-layer instabilities in a wide latitudinal range. A typical wavelength of ˜150 km, larger amplitude, and smaller MSTID's tilt angles at lower latitudes are consistent with observations. It is shown that the polarization process in the E region driven by neutral winds is essentially important for the full development of MSTIDs as well as the seeding of NW-SE perturbation in the F region.
Hysell David L.
Yokoyama Tatsuhiro
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