Physics
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.7958l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Oct. 1, 1983, p. 7958-7966.
Physics
91
Atmospheric Electricity, Geomagnetic Micropulsations, Magnetic Storms, Polarization Characteristics, Ellipticity, Magnetometers
Scientific paper
Results from a study of Pi 2 pulsations observed on an east-west chain of magnetometers are presented, concentrating on the relationship between magnetic bays and Pi 2 polarization characteristics. The magnetometer array and data set used are described along with the model of the substorm current wedge and the associated, predicted Pi 2 polarization pattern. Examples of Pi 2 pulsations, their polarization pattern, and the related bay structure are given. The polarization pattern is described for 16 event where it is possible to locate the center of the substorm current system between the two extreme meridians of the network. The effective width of the Pi 2 current system is estimated to have an average value of six hours for the 16 events. There is no systematic variation in ellipticity with either local time or the substorm current system. Wave phase differences between stations are predominantly negative in both H and D components.
Hughes Jeffrey W.
Lester Mark
Singer Howard J.
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