About: Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We present results of a statistical study of VLF (up to 10 kHz) wave intensity measured by a low-altitude spacecraft in the vicinity of earthquakes. The data from the French DEMETER spacecraft (altitude about 700 km, nearly Sun-synchronous orbit) that was specially developed for such kind of studies are used. The recently developed two-step data processing method is briefly introduced and the main obtained results are reviewed. Finally, a simple independent test of the obtained results is done in order to give an additional evidence for the existence of possible seismic-related effect. Our results indicate that there is a decrease of power spectral density of electric field fluctuations shortly (0-4 hours) before the time of the main shock. This decrease was observed close to surface earthquakes (depth less than 40 km) with magnitude larger than or equal to 4.8 and only during the night. No similar effect was observed for deep earthquakes nor during the day. We present results of a statistical study of VLF (up to 10 kHz) wave intensity measured by a low-altitude spacecraft in the vicinity of earthquakes. The data from the French DEMETER spacecraft (altitude about 700 km, nearly Sun-synchronous orbit) that was specially developed for such kind of studies are used. The recently developed two-step data processing method is briefly introduced and the main obtained results are reviewed. Finally, a simple independent test of the obtained results is done in order to give an additional evidence for the existence of possible seismic-related effect. Our results indicate that there is a decrease of power spectral density of electric field fluctuations shortly (0-4 hours) before the time of the main shock. This decrease was observed close to surface earthquakes (depth less than 40 km) with magnitude larger than or equal to 4.8 and only during the night. No similar effect was observed for deep earthquakes nor during the day. (en)
Title	Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite (en)
skos:prefLabel	Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite (en)
skos:notation	RIV/68378289:_____/08:00326597!RIV10-AV0-68378289
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA205/06/1267), Z(AV0Z30420517)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Santolík, Ondřej Němec, František
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky atmosféry AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	387900
http://linked.open...ai/riv/idVysledku	RIV/68378289:_____/08:00326597
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	seismo-electromagnetic effects; VLF electromagnetic waves; DEMETER (en)
http://linked.open.../riv/klicoveSlovo	DEMETER VLF electromagnetic waves seismo-electromagnetic effects
http://linked.open...ontrolniKodProRIV	[A534C0296AA9]
http://linked.open...v/mistoKonaniAkce	Prague
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	WDS'08 Proceedings of Contributed Papers: Part II - Physics of Plasmas and Ionized Media
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Low-frequency wave coupling of the atmosphere, ionosphere, and inner magnetosphere of the Earth
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Parrot, M. Santolík, Ondřej Němec, František
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2008-06-03 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Studium atmosférického obalu Země v interakci s pozemskými a kosmickými vlivy
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	MATFYZPRESS, Praha
https://schema.org/isbn	978-80-7378-066-1
is http://linked.open...avai/riv/vysledek of	Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite Possible Seismic Influence on VLF Wave Intensity: Observations by a Low-Altitude Satellite

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