Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm22a..07m&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM22A-07
Physics
2704 Auroral Phenomena (2407), 2716 Energetic Particles, Precipitating, 2736 Magnetosphere/Ionosphere Interactions, 2772 Plasma Waves And Instabilities, 2788 Storms And Substorms
Scientific paper
Auroral kilometric radiation (AKR) intensity is well known to be closely related to the substorm activity, indicating that the substorm strength controls the AKR development. In this study, we present the activity of AKR during magnetically quiet periods, when AE index is less than 100 nT, auroral oval is contracted to higher latitude, and particle injection is not detected at the geosynchronous orbit. The investigation showed that the onset of the "quiet time AKR" is triggered by a small substorm in the magnetosphere which is manifested by the small but clear auroral break-up, Pi2 pulsation, and sudden plasma flow in the plasma sheet. It is also shown that the quiet time AKR sometimes appears with an intense amplitude comparable with the usual substorm-time AKR. These results suggest that AKR appearance is related to the onset of substorm but development of AKR does not always depend on the scale of substorm.
Hashimoto Katsumi
Matsumoto Haru
Misawa Hiroaki
Miyoshi Yasunobu
Morioka Akira
No associations
LandOfFree
AKR Activity During Magnetically Quiet Periods 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 AKR Activity During Magnetically Quiet Periods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AKR Activity During Magnetically Quiet Periods will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1465864