Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm42c0621p&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SM42C-0621
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2443 Midlatitude Ionosphere, 2455 Particle Precipitation, 2483 Wave/Particle Interactions, 2716 Energetic Particles, Precipitating
Scientific paper
We examine two different four-hour sequences of subionospheric Very Low Frequency (VLF) signal perturbations and provide a characterization of electron precipitation induced by non-ducted obliquely propagating whistlers. These lightning-induced electron precipitation (LEP) events are typically associated with cloud-to-ground lightning, with the event magnitudes positively correlated with the magnitude of the peak current of the discharge. A distributed set of VLF observing sites, known as the Holographic Array for Ionospheric and Lightning Research (HAIL), captures the full latitudinal extent of the events, providing evidence that 90% of the precipitation occurs within a range of ˜ 6-8° in latitude (666-888km). We further demonstrate that the onset delay ( ˜ 0.5-3s) and the duration of precipitation ( ˜1-4s) steadily increase with increasing L-value, while the signal recovery time ( ˜ 30-40s) is independent of L. The dependence of the spatial and temporal parameters of the precipitation on the location of the causative lightning discharges is also examined. When the causative discharge is at higher latitudes, the LEP event is of longer duration and exhibits precipitation in a smaller area displaced less from the causative discharge. The onset delays and event durations increase more rapidly with increasing L-value for events associated with causative discharges at higher latitudes. The general spatial and temporal signatures are consistent with those expected for LEP events induced by nonducted whistlers.
Inan Umran S.
Peter W. B.
No associations
LandOfFree
Characteristics of Non-ducted Whistler-Induced Electron Precipitation 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 Characteristics of Non-ducted Whistler-Induced Electron Precipitation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristics of Non-ducted Whistler-Induced Electron Precipitation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1650088