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. The radiation is seen to penetrate the magnetosphere since numerous occurre...

Full description

Bibliographic Details
Main Authors: D. Nunn, J. Manninen, T. Turunen, V. Trakhtengerts, N. Erokhin
Format: Article
Language:English
Published: Copernicus Publications 1999-01-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/17/79/1999/angeo-17-79-1999.pdf
id doaj-ec2241422e4a4eec85d657317586b25f
record_format Article
spelling doaj-ec2241422e4a4eec85d657317586b25f2020-11-24T23:51:17ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761999-01-0117799410.1007/s00585-999-0079-4On the nonlinear triggering of VLF emissions by power line harmonic radiationD. Nunn0J. Manninen1T. Turunen2V. Trakhtengerts3N. Erokhin4Department of Electronics and Computer Science, Southampton University, Southampton, UK<br>E-mail: dn@ecs.soton.ac.ukSodankyla Geophysical Observatory, Sodankyla, FinlandSodankyla Geophysical Observatory, Sodankyla, FinlandInstitute of Applied Physics, Nizhni Novgorod, RussiaSRI, Moscow, RussiaVLF 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. The 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 <i>L</i> values from <i>L</i> = 4 to <i>L</i> = 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 structure of both risers and fallers.<br><br><b>Key words.</b> Electromagnetics (numerical methods) · Ionosphere (wave-particle interactions) · Magnetospheric physics (plasma waves and instabilities)https://www.ann-geophys.net/17/79/1999/angeo-17-79-1999.pdf
collection DOAJ
language English
format Article
sources DOAJ
author D. Nunn
J. Manninen
T. Turunen
V. Trakhtengerts
N. Erokhin
spellingShingle D. Nunn
J. Manninen
T. Turunen
V. Trakhtengerts
N. Erokhin
On the nonlinear triggering of VLF emissions by power line harmonic radiation
Annales Geophysicae
author_facet D. Nunn
J. Manninen
T. Turunen
V. Trakhtengerts
N. Erokhin
author_sort D. Nunn
title On the nonlinear triggering of VLF emissions by power line harmonic radiation
title_short On the nonlinear triggering of VLF emissions by power line harmonic radiation
title_full On the nonlinear triggering of VLF emissions by power line harmonic radiation
title_fullStr On the nonlinear triggering of VLF emissions by power line harmonic radiation
title_full_unstemmed On the nonlinear triggering of VLF emissions by power line harmonic radiation
title_sort on the nonlinear triggering of vlf emissions by power line harmonic radiation
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 1999-01-01
description 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. The 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 <i>L</i> values from <i>L</i> = 4 to <i>L</i> = 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 structure of both risers and fallers.<br><br><b>Key words.</b> Electromagnetics (numerical methods) · Ionosphere (wave-particle interactions) · Magnetospheric physics (plasma waves and instabilities)
url https://www.ann-geophys.net/17/79/1999/angeo-17-79-1999.pdf
work_keys_str_mv AT dnunn onthenonlineartriggeringofvlfemissionsbypowerlineharmonicradiation
AT jmanninen onthenonlineartriggeringofvlfemissionsbypowerlineharmonicradiation
AT tturunen onthenonlineartriggeringofvlfemissionsbypowerlineharmonicradiation
AT vtrakhtengerts onthenonlineartriggeringofvlfemissionsbypowerlineharmonicradiation
AT nerokhin onthenonlineartriggeringofvlfemissionsbypowerlineharmonicradiation
_version_ 1725476550582730752

Similar Items