Auroral Activity on January 1-2, 1997


Gaps in the Auroral Zone

This period was suggested by Mitch Brittnacher (University of Washington), who noticed that the auroral zone has a distinct gap where very little precipitation occurs for 10-15 minutes. This gap is then filled with a strong aurora. We are interested how the ionosphere is modified by the aurora, and a gap like this will have some impact on how currents flow in the ionosphere.

Raw Data (January 1-2, 1997)

These images are raw UVI images, not calibrated and not transformed into geographic coordinate systems. One image every 3 minutes (approximately) is shown to give a general overview of the auroral activity.

Summary plots from 1 January with one sample image about every 3 minutes (LBH-long filter)
00:00-03:21 UT 03:24-06:40 UT 06:43-10:00 UT
 
13:42-17:02 UT 17:05-20:28 UT 20:31-23:46 UT  

Summary plots from 2 January with one sample image about every 3 minutes (LBH-long filter)
00:02-03:17 UT 07:10-10:35 UT 10:38-13:57 UT
 
14:00-17:19 UT 17:23-20:43 UT  
Two examples of these gaps are shown here in geomagnetic coordinates: 01:46 UT and 16:39 UT on January 2, 1997.


Last updated: 24 November 1997

Questions? Comments? Or would you like to add to this study?
Please send E-mail to Dirk Lummerzheim lumm@gi.alaska.edu