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Micropulsation Observations of the Auroral Oval Boundary
Elwood Maple
出版Air Force Cambridge Research Laboratories, Air Force Systems Command, United States Air Force, 1974
URLhttp://books.google.com.hk/books?id=A7ZzsMq33FwC&hl=&source=gbs_api
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註釋At the sub-auroral-zone latitude (+54 degrees geomagnetic) of the AFCRL field station, geomagnetic micropulsations associated with the auroral oval are observed only during large nighttime disturbances. Hourly amplitudes of the horizontal component of the micropulsations in octave period bands in the 0.5 to 1024 sec period range are used as measures of the activity. Near local midnight, consistently small values are observed with local K indices