Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region
The electron rate of recombination and collision frequency of electrons with neutrals depend on the electron temperature, which is, at E-region heights, greater than the neutral temperature even for geomagnetically quiet conditions; therefore in order to perform theoretical computations of electron...
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todo:paper_00320633_v35_n1_p1_Duhau2023-10-03T14:44:42Z Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region Duhau, S. De La Vega, M. Azpiazu, M.C. The electron rate of recombination and collision frequency of electrons with neutrals depend on the electron temperature, which is, at E-region heights, greater than the neutral temperature even for geomagnetically quiet conditions; therefore in order to perform theoretical computations of electron number and electric current densities, the usual hypothesis that both temperatures are equal at those heights is removed in the present paper. Instead, an empirical model of E-region electron temperature is used and all the data were carefully selected so that they correspond to equivalent ionospheric and solar conditions. It is found that: the electron number density, depends strongly on the electron temperature, being well predicted by the present model; the shape of the vertical profile of the electrical conductivity is mainly determined by the electron number density profile, and the shape of the vertical current density thus calculated is in good agreement with the measured one. At the dip equator, a discrepancy between the intensity of the measured and computed current densities around the height of the electrojet peak still remains, which could be due to an anomalous reduction of the electric field there, as is suggested by the agreement found a few degrees beyond the dip. © 1987. Fil:Duhau, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:De La Vega, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Azpiazu, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00320633_v35_n1_p1_Duhau |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
The electron rate of recombination and collision frequency of electrons with neutrals depend on the electron temperature, which is, at E-region heights, greater than the neutral temperature even for geomagnetically quiet conditions; therefore in order to perform theoretical computations of electron number and electric current densities, the usual hypothesis that both temperatures are equal at those heights is removed in the present paper. Instead, an empirical model of E-region electron temperature is used and all the data were carefully selected so that they correspond to equivalent ionospheric and solar conditions. It is found that: the electron number density, depends strongly on the electron temperature, being well predicted by the present model; the shape of the vertical profile of the electrical conductivity is mainly determined by the electron number density profile, and the shape of the vertical current density thus calculated is in good agreement with the measured one. At the dip equator, a discrepancy between the intensity of the measured and computed current densities around the height of the electrojet peak still remains, which could be due to an anomalous reduction of the electric field there, as is suggested by the agreement found a few degrees beyond the dip. © 1987. |
| format |
JOUR |
| author |
Duhau, S. De La Vega, M. Azpiazu, M.C. |
| spellingShingle |
Duhau, S. De La Vega, M. Azpiazu, M.C. Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| author_facet |
Duhau, S. De La Vega, M. Azpiazu, M.C. |
| author_sort |
Duhau, S. |
| title |
Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| title_short |
Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| title_full |
Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| title_fullStr |
Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| title_full_unstemmed |
Effect of the electron temperature in the electron number density and dynamics of the equatorial E-region |
| title_sort |
effect of the electron temperature in the electron number density and dynamics of the equatorial e-region |
| url |
http://hdl.handle.net/20.500.12110/paper_00320633_v35_n1_p1_Duhau |
| work_keys_str_mv |
AT duhaus effectoftheelectrontemperatureintheelectronnumberdensityanddynamicsoftheequatorialeregion AT delavegam effectoftheelectrontemperatureintheelectronnumberdensityanddynamicsoftheequatorialeregion AT azpiazumc effectoftheelectrontemperatureintheelectronnumberdensityanddynamicsoftheequatorialeregion |
| _version_ |
1807316904439709696 |