Physics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28..516s&link_type=abstract
Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, May-June 1988, p. 516-518. In Russian.
Physics
Geomagnetic Micropulsations, Propagation Velocity, Radar Measurement, Velocity Measurement, Auroras, Magnetic Storms
Scientific paper
Radar measurements show that the region of maximum intensity of Pi1B geomagnetic pulsations moves along a parallel with a velocity of 40 km/s at the commencement of substorm intensification. This velocity then decreases to 5 km/s. The time dependence of the velocity can be expressed as V(Delta T) = 26.4 (1 + Delta T) exp -0.75 km/s, where Delta T is time in minutes counted from the commencement of the Pi2 chain recorded at a midlatitude station. The displacement velocity of the Pi1B intensity maximum along a meridian is 1.5-5 km/s.
Shaftan V. A.
Vasil'Ev I. N.
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