Latitudinal variations of Joule heating due to the auroral electrojets

Details Latitudinal variations of Joule heating due to the auroral electrojets Latitudinal variations of Joule heating due to the auroral electrojets

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89..245d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Jan. 1, 1984, p. 245-251.

Physics

10

Auroral Electrojets, Auroral Temperature, Ionospheric Heating, Northern Hemisphere, Ohmic Dissipation, Resistance Heating, Atmospheric Heat Budget, Incoherent Scatter Radar, Magnetic Disturbances, Polar Regions

Scientific paper

Empirical scaling factors between the height-integrated Joule heating rate deduced from measurements of the Chatanika incoherent scatter radar and the square of magnetic perturbations at College are derived. These relationships, calculated for different situations (the eastward and westward electrojets and daytime) are then used to estimate the Joule heating rate along the latitudinal extent of the auroral oval on the basis of magnetometer data from the IMS Alaska meridian chain of observatories. The total heat input for a disturbed day (April 12, 1978) is estimated to be 2.8 x 10 to the 15th J.

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