Statistical investigation of VLF quasiperiodic emissions measured by the DEMETER spacecraft

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10289758" target="_blank" >RIV/00216208:11320/14:10289758 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378289:_____/14:00436387

Výsledek na webu

<a href="http://dx.doi.org/10.1002/2013JA019731" target="_blank" >http://dx.doi.org/10.1002/2013JA019731</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2013JA019731" target="_blank" >10.1002/2013JA019731</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Statistical investigation of VLF quasiperiodic emissions measured by the DEMETER spacecraft

Popis výsledku v původním jazyce

We present a survey of quasiperiodic (QP) ELF/VLF emissions detected onboard the DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite (altitude of about 700km, nearly Sun-synchronous orbit at 10:30/22:30 LT). Six years of data have been visually inspected for the presence of QP emissions with modulation periods higher than 10s and with frequency bandwidths higher than 200Hz. It is found that these QP events occur in about 5% of daytime half orbits, while they are basically absent during the night. The events occur predominantly during quiet geomagnetic conditions following the periods of enhanced geomagnetic activity. Their occurrence and properties are systematically analyzed. QP emissions occur most often atfrequencies from about 750Hz to 2kHz, but they may be observed at frequencies as low as 500Hz and as high as 8kHz. Modulation periods of QP events may range from about 10 to 100s, with typical values of 20s. Frequency drifts of the ident

Název v anglickém jazyce

Statistical investigation of VLF quasiperiodic emissions measured by the DEMETER spacecraft

Popis výsledku anglicky

We present a survey of quasiperiodic (QP) ELF/VLF emissions detected onboard the DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite (altitude of about 700km, nearly Sun-synchronous orbit at 10:30/22:30 LT). Six years of data have been visually inspected for the presence of QP emissions with modulation periods higher than 10s and with frequency bandwidths higher than 200Hz. It is found that these QP events occur in about 5% of daytime half orbits, while they are basically absent during the night. The events occur predominantly during quiet geomagnetic conditions following the periods of enhanced geomagnetic activity. Their occurrence and properties are systematically analyzed. QP emissions occur most often atfrequencies from about 750Hz to 2kHz, but they may be observed at frequencies as low as 500Hz and as high as 8kHz. Modulation periods of QP events may range from about 10 to 100s, with typical values of 20s. Frequency drifts of the ident

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geophysical Research - Space Physics

ISSN

2169-9380

e-ISSN

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Svazek periodika

119

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

8063-8072

Kód UT WoS článku

000345445400007

EID výsledku v databázi Scopus

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