Statistics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm51a0505s&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM51A-0505
Statistics
2704 Auroral Phenomena (2407), 2716 Energetic Particles, Precipitating, 2752 Mhd Waves And Instabilities, 7807 Charged Particle Motion And Acceleration, 7867 Wave/Particle Interactions
Scientific paper
For 13 years fluxgate magnetometers and single beam 30 MHz RIOMETERS have been operated at 13 locations across northwestern Canada as part of the CANOPUS program. Using data from these instruments, we have investigated the modulation of high energy electron precipitation by ULF waves in the Pc5 frequency band. For one station (Gillam - 67.2° invariant), we identified all RIOMETER Pc5-band pulsations over 13 years. All had a corresponding magnetometer pulsation: a magnetic pulsation is a necessary condition for a RIOMETER pulsation (in the Pc5 Band). We identified ~1700 Pc5 pulsation events in the CANOPUS Churchill line magnetometer data, ~~250 of which had associated RIOMETER pulsations. Roughly 95% of the RIOMETER pulsations occurred in the morning sector compared to 70% in the magnetometer. Given a magnetometer pulsation at Gillam in the morning sector, there is a 65% chance of there being a corresponding RIOMETER pulsation. The morning sector probabilities at Rankin (74°) and Pinawa (61°) are 3% and 5% respectively. This suggest that there is a localized region in the pre-noon magnetosphere where Pc5 band ULF activity can modulate high energy electron precipitation. Our results are easily explained by considering the drift paths of the precipitating electrons and the occurrence statistics of magnetic pulsations. Furthermore, our results shed some light on the interaction of ULF waves and high energy electrons in the inner magnetosphere.
Baker George
Donovan Eric
Jackel Brian
Knudsen D.
Spanswick E. L.
No associations
LandOfFree
Modulation of >30 KeV Electron Precipitation by Pc5 Magnetic Pulsations 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 Modulation of >30 KeV Electron Precipitation by Pc5 Magnetic Pulsations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulation of >30 KeV Electron Precipitation by Pc5 Magnetic Pulsations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1438868