Statistical study of lion roar emissions observed by the cluster spacecraft

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F14%3A00442089" target="_blank" >RIV/68378289:_____/14:00442089 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929932" target="_blank" >http://dx.doi.org/10.1109/URSIGASS.2014.6929932</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929932" target="_blank" >10.1109/URSIGASS.2014.6929932</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Statistical study of lion roar emissions observed by the cluster spacecraft

Popis výsledku v původním jazyce

Lion roars are intense narrow-band whistler-mode emissions with typical frequencies about 100 Hz. They are frequently occurring in the Earth's magnetosheath. They are thought to be generated by local electron temperature instabilities. The four CLUSTER spacecraft allow us to study the Earth's magnetospehere and its interaction with the solar wind in three dimensions. We have identified about 5000 time-frequency intervals containing the lion roar emissions during 2001 and 2005 in the data of the Spatio Temporal Analysis Field Fluctuations ? Spectral Analyzer (STAFF-SA). We present results of a statistical study of Lion roar?s spatial, frequency and wave power distribution. We have found that Lion roars are more often observed on the dawn side than on the dusk side of the magnetosheath. We have investigated the orientation of Poyting vector directions of Lion roars calculated from measured spectral matrices using the Singular Value Decomposition (SVD).

Název v anglickém jazyce

Statistical study of lion roar emissions observed by the cluster spacecraft

Popis výsledku anglicky

Lion roars are intense narrow-band whistler-mode emissions with typical frequencies about 100 Hz. They are frequently occurring in the Earth's magnetosheath. They are thought to be generated by local electron temperature instabilities. The four CLUSTER spacecraft allow us to study the Earth's magnetospehere and its interaction with the solar wind in three dimensions. We have identified about 5000 time-frequency intervals containing the lion roar emissions during 2001 and 2005 in the data of the Spatio Temporal Analysis Field Fluctuations ? Spectral Analyzer (STAFF-SA). We present results of a statistical study of Lion roar?s spatial, frequency and wave power distribution. We have found that Lion roars are more often observed on the dawn side than on the dusk side of the magnetosheath. We have investigated the orientation of Poyting vector directions of Lion roars calculated from measured spectral matrices using the Singular Value Decomposition (SVD).

Druh

D - Stať ve sborníku

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 statě ve sborníku

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

ISBN

978-1-4673-5225-3

ISSN

—

e-ISSN

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Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

New York

Místo konání akce

Beijing

Datum konání akce

16. 8. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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