On the nonlinear triggering of VLF emissions by power line harmonic radiation
On the nonlinear triggering of VLF emissions by power line harmonic radiation
VLF ground data from Porojarvi in N. Finland has been presented. Spectrograms reveal frequent occurrence of power line harmonic radiation (PLHR), originating from the Finnish power system and from heavy industrial plant. This radiation is seen to penetrate the magnetosphere since numerous occurrences of PLHR triggered emissions are seen. Risers predominate but fallers and hooks are also observed. A well established 1D Vlasov simulation code has been used to simulate these emissions, using plausible magnetospheric data for a range of L values from L=4 to L=5.5. The code is able to reproduce risers fallers and hooks in close agreement with observations. The results shed considerable insight into the generation region structure of both risers and fallers.
PLHR, POwer Line HArmonic Radiation, triggered emissions, plams asimulation, vlasov methods
79-94
Nunn, D
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Manninen, J
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Turunen, T
866675d7-a5fd-416c-84c6-53dd11284fdb
Trakhtengerts, VY
9cbc275c-ce25-4430-8bfd-b141fed277ff
Erokhin, N
5936082d-ce99-4a8b-a831-3199be4837fb
1999
Nunn, D
5115be8c-b699-427b-b7df-8795398381e5
Manninen, J
be790db4-21a0-4c70-bec1-633770677db1
Turunen, T
866675d7-a5fd-416c-84c6-53dd11284fdb
Trakhtengerts, VY
9cbc275c-ce25-4430-8bfd-b141fed277ff
Erokhin, N
5936082d-ce99-4a8b-a831-3199be4837fb
Nunn, D, Manninen, J, Turunen, T, Trakhtengerts, VY and Erokhin, N
(1999)
On the nonlinear triggering of VLF emissions by power line harmonic radiation.
Annales Geophysicae, 17, .
Abstract
VLF ground data from Porojarvi in N. Finland has been presented. Spectrograms reveal frequent occurrence of power line harmonic radiation (PLHR), originating from the Finnish power system and from heavy industrial plant. This radiation is seen to penetrate the magnetosphere since numerous occurrences of PLHR triggered emissions are seen. Risers predominate but fallers and hooks are also observed. A well established 1D Vlasov simulation code has been used to simulate these emissions, using plausible magnetospheric data for a range of L values from L=4 to L=5.5. The code is able to reproduce risers fallers and hooks in close agreement with observations. The results shed considerable insight into the generation region structure of both risers and fallers.
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Published date: 1999
Keywords:
PLHR, POwer Line HArmonic Radiation, triggered emissions, plams asimulation, vlasov methods
Organisations:
Electronics & Computer Science
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Local EPrints ID: 259009
URI: http://eprints.soton.ac.uk/id/eprint/259009
ISSN: 0992-7689
PURE UUID: d484fe40-46aa-42c7-abcb-cf6d364ba2e2
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Date deposited: 05 Mar 2004
Last modified: 14 Mar 2024 06:17
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Contributors
Author:
D Nunn
Author:
J Manninen
Author:
T Turunen
Author:
VY Trakhtengerts
Author:
N Erokhin
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