A confirmation of the validity of the electric current distribution determined by a ground-based magnetometer network

Details A confirmation of the validity of the electric current distribution determined by a ground-based magnetometer network A confirmation of the validity of the electric current distribution determined by a ground-based magnetometer network

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992geoji.109..191a&link_type=abstract

Geophysical Journal International (ISSN 0956-540X), vol. 109, April 1992, p. 191-196.

Computer Science

Sound

5

Current Distribution, Earth Magnetosphere, Ground Truth, Ionospheric Currents, Magnetometers, Satellite Sounding, Computerized Simulation, Field Aligned Currents, Ionospheric Heating, Ohmic Dissipation, Resistance Heating

Scientific paper

Determination of the distribution of electric currents at the ionospheric level by a ground-based magnetometer network has been sought for by Birkeland (1908) and Chapman (1935). Both recognized difficulties associated with the determination. During the last decade, the difficulties were overcome by establishing several meridian chains of magnetic observations and developing several computer codes to invert the magnetic data. On the other hand, it has been difficult to confirm the current distribution thus obtained by a completely independent method. It is fortunate that an opportunity for the independent determination has arisen by a recent satellite-based observation. It is shown that both the ground-based and satellite-based results agree fairly well with each other. Thus, a ground-based magnetometer network has been proven to be able to determine the 3D current distribution which couples the magnetosphere and the ionosphere.

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