Počet záznamů: 1

Whistler intensities above thunderstorms

SYSNO ASEP	0340437
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Whistler intensities above thunderstorms
Tvůrce(i)	Fišer, Jiří (UFA-U)_{RID, ORCID} Chum, Jaroslav (UFA-U)_{RID, ORCID} Diendorfer, G. (AT) Parrot, M. (FR) Santolík, Ondřej (UFA-U)_{RID, ORCID}
Zdroj.dok.	Annales Geophysicae. - : Copernicus - ISSN 0992-7689 Roč. 28, č. 1 (2010), s. 37-46
Poč.str.	10 s.
Forma vydání	web - web
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	Ionosphere (Wave propagation) ; Meteorology and atmospheric dynamics (Lightning) ; Radio science (Waves in plasma)
Vědní obor RIV	BL - Fyzika plazmatu a výboje v plynech
CEP	GA205/09/1253 GA ČR - Grantová agentura ČR
CEZ	AV0Z30420517 - UFA-U, BC-A (2005-2011)
UT WOS	000274136900005
DOI	10.5194/angeo-28-37-2010
Anotace	We report a study of penetration of the VLF electromagnetic waves induced by lightning to the ionosphere. We compare the fractional hop whistlers recorded onboard the DEMETER satellite with lightning detected by the EUCLID network. We have developed software for automatic detection of the fractional hop whistlers in the VLF spectrograms. We obtain a map of mean amplitudes of whistler electric field as a function of latitudinal and longitudinal difference between the location of the causative lightning and satellite magnetic footprint. The mean whistler amplitude monotonically decreases with horizontal distance up to ~1000 km from the lightning. The maximum of whistler intensities is shifted from the satellite magnetic footprint ~1° owing to the oblique propagation. The average amplitude of whistlers increases with the lightning current. At nighttime, the average amplitude of whistlers is about three times higher than during the daytime.
Pracoviště	Ústav fyziky atmosféry
Kontakt	Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019
Rok sběru	2010

Počet záznamů: 1