Ultra-slow tails of sprite-associated lightning flashes
| dc.contributor.author | Fraser-Smith, Antony C., author | |
| dc.contributor.author | Füllekrug, Martin, author | |
| dc.contributor.author | Reising, Steven C., author | |
| dc.contributor.author | American Geophysical Union, publisher | |
| dc.date.accessioned | 2007-01-03T08:10:56Z | |
| dc.date.available | 2007-01-03T08:10:56Z | |
| dc.date.issued | 1998 | |
| dc.description.abstract | We describe the terrestrial excitation of horizontal magnetic field variations in the Pc1 frequency range (0.2-5.0 Hz) by tropospheric, sprite-associated lightning flashes, measured ~1900 km west from the source. These variations, which we call ultra-slow tails, exhibit amplitudes on the order of tens of pT, they have a duration of ~3 seconds, and they occur immediately following the initial pulse of the sprite-associated lightning flash. The ultra-slow tails exhibit two peaks In the frequency domain at 0.67 Hz and 1.67 Hz: The mean polarization ellipses at these two frequencies are oriented ~45° clockwise from geographic north and exhibit right-hand and left-hand polarization respectively with a weak ellipticity of ~0.1. The horizontal magnetic intensity of the initial pulse is related to the horizontal magnetic intensity of the ultra-slow tail, in agreement with the interpretation of ultra-slow tails as ionospheric Alfven resonances. | |
| dc.format.medium | born digital | |
| dc.format.medium | articles | |
| dc.identifier.bibliographicCitation | Füllekrug, Martin, et al., Ultra-Slow Tails of Sprite-Associated Lightning Flashes, Geophysical Research Letters 25, no. 18 (September 15, 1998): 3497-3500. | |
| dc.identifier.uri | http://hdl.handle.net/10217/68068 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation.ispartof | Faculty Publications | |
| dc.rights | ©1998 American Geophysical Union. | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.title | Ultra-slow tails of sprite-associated lightning flashes | |
| dc.type | Text |
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