Cross-polar cap potential drop and the energy coupling function

Details Cross-polar cap potential drop and the energy coupling function Cross-polar cap potential drop and the energy coupling function

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....8911028a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Dec. 1, 1984, p. 11028-11032.

Physics

19

Earth Magnetosphere, Electric Potential, Ionospheric Currents, Magnetic Disturbances, Polar Caps, Solar Wind, Algorithms, Electrojets, Magnetometers

Scientific paper

A numerical model is formulated for correlations between the cross polar cap potential, the solar wind, and the AI index and compared with satellite data. The conductivity model was devised from empirically defined relationships between the Hall and Pedersen conductivities and the measured magnitude of the horizontal magnetic disturbance near College, AK. An instantaneous conductivity distribution was generated from data gathered at, e.g., six IMS meridian chain stations. A strong correlation appeared between an energy coupling function (ECF) and the polar cap potential drop. The ECF was derived from the chain station data, implying that potential drop estimates can be made from ground-based magnetometer data.

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