Model of the high-latitude ionospheric convection pattern during southward interplanetary magnetic field using DE 2 data

Details Model of the high-latitude ionospheric convection pattern during southward interplanetary magnetic field using DE 2 data Model of the high-latitude ionospheric convection pattern during southward interplanetary magnetic field using DE 2 data

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.2333h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, March 1, 1990, p. 2333-2343.

Other

49

Convection, Electric Potential, Electrostatics, Interplanetary Magnetic Fields, Ionospheric Currents, Polar Regions, Mathematical Models, Polar Caps, Satellite Observation, Spatial Distribution, Two Dimensional Models

Scientific paper

Data from the polar-orbiting satellite DE 2 are used to calculate one-dimensional electrostatic potential distributions across the polar cap region. Using passes that lie within + or - 3 hours MLT of the dawn-dusk line, various parameters of the polar potential distribution (location and magnitude of the maxima and minima, location of the zero potential point, etc.) are analyzed in relation to each other and to the IMF. The resulting dependences are used to derive a two-dimensional model of the distribution of the electrostatic potential in the high-latitude ionosphere during times of southward IMF. This model can be generated using as inputs either the ionospheric potential parameters or, based on the relationships analyzed here, the IMF conditions. The capabilities of the resulting mathematical model are illustrated, and the importance of retaining a flexibility in the model to accommodate individual observations is emphasized.

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