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Subj: Solar?
Date: 98-10-19 11:26:22 EDT
From: ulf@elfrad.com (Elfrad Group)
Hello Kent,
This present activity is interesting in it's own way. During the beginning of the storm, I was keeping an eye for the notch to develop in the Aurora and sure enough between 11:07 and 04:50 EDT it became apparent. Markers "P" and "S" indicate the time period. Also notice the frequency band shown in FFT1019a around .015 hz is very noticeable, which is equal to a wavelength of 12,423,601 miles.
This frequency does not appear in FFT1019b.gif which is the next six hour segment shown in MAG1019b.gif. At that time the notch which was predominate earlier had disappeared. Interesting.
Has the sun captured an unknown minor planet?
Charlie Plyler
The Case of the Missing Aurora
Credit: J. P. Dwyer
Explanation: Sometimes, near midnight, auroras suddenly stop. Nobody knows why. This nightside gap in aurora was confirmed recently by D. Chua (U. Washington) and colleagues in data from the Ultraviolet Imager onboard the Polar spacecraft. The gap appears from space as a slight break in a more full auroral arc surrounding a magnetic pole of the Earth. Pictured above are clouds and auroras occurring last August near Wildcat Mountain in Wisconsin.
Subj: Update
Date: 98-10-19 15:44:56 EDT
From: ulf@elfrad.com (Elfrad Group)
Segment recorded 1100 to 1600 UT, 10/19/98. wide fluctuations in the magnetic field. Currents through the earth are tracking extremely well with the Canadian Space Agency Magnetometer located at Fort McMurry. Note Canmag3.gif.
