Computer Science – Sound
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89..389k&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Jan. 1, 1984, p. 389-393. Navy-supported research.
Computer Science
Sound
9
Arctic Regions, Auroral Electrojets, Geomagnetism, Magnetic Disturbances, Radar Measurement, All Sky Photography, Field Aligned Currents, International Magnetospheric Study, Latitude, Magnetometers, Satellite Sounding
Scientific paper
Nearly simultaneous data from the Chatanka radar, the TRIAD satellite, and the IMS Alaska meridian chain of magnetic and auroral observatories are utilized to examine the spatial relationship among auroras, field-aligned currents, ionospheric electric fields, and conductivities in the westward electrojet in early morning hours. The westward electrojet is found to be dominated by one of two different quantities, depending on latitudinal locations in this local time sector. The poleward half of the electrojet is governed by a relatively intense southward electric field. On the other hand the Hall conductivity is the dominant factor in controlling the electrojet current in the equatorward half. The electrojet center appears to be located within the region of the upward field-aligned curent. Major auroral activity is present only in the equatorward half of the electrojet in which the upward field-aligned current prevails, although it appears that the latitudinal variations of the conductivity and current intensity are not well related within that region.
Akasofu Syuh-Ichi
Kamide Yohsuke
Potemra Thomas A.
Robinson Richard M.
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