Physics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.1306m&link_type=abstract
Journal of Geophysical Research, vol. 81, Mar. 1, 1976, p. 1306-1318.
Physics
Auroral Zones, Geomagnetic Micropulsations, Magnetic Disturbances, Magnetospheric Instability, Geomagnetic Tail, Magnetohydrodynamic Waves, Nocturnal Variations
Scientific paper
A 5-month sample of geomagnetic micropulsation data from Strawberry Hill, Massachusetts, +54 deg geomagnetic latitude, is analyzed in octave period bandwidths in the 0.5 to 1024-s period range. Hourly average amplitudes of the horizontal and vertical components are used as measures of the activity. The auroral oval (AO) regime of micropulsations is identified by large H and Z amplitudes combined with small H/Z ratios. It is observed during large nighttime disturbances within a 'micropulsation oval' whose southern boundary extends 1 or 2 degrees of latitude south of the oval delineated by particle precipitation and is attributed to hydromagnetic waves which propagate in the guided mode from the plasma sheet in the magnetospheric tail. Spatial variations of the source strength in the plasma sheet, which vary with micropulsation period, are reflected in the diurnal variations of the AO amplitudes.
Fische W. L.
Frey H. J.
Maple Elwood
No associations
LandOfFree
Auroral oval micropulsations at a subauroral zone station does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Auroral oval micropulsations at a subauroral zone station, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auroral oval micropulsations at a subauroral zone station will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1219394