Influence of Interplanetary Shocks on ELF/VLF Waves Observed in the Earth's Magnetosphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389492" target="_blank" >RIV/00216208:11320/18:10389492 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mff.cuni.cz/veda/konference/wds/proc/pdf18/WDS18_13_f2_Bezdekova.pdf" target="_blank" >https://www.mff.cuni.cz/veda/konference/wds/proc/pdf18/WDS18_13_f2_Bezdekova.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Interplanetary Shocks on ELF/VLF Waves Observed in the Earth's Magnetosphere

Popis výsledku v původním jazyce

In this study, the influence of interplanetary (IP) shocks detected by the Wind spacecraft on the wave intensity in the frequency range up to 20 kHz measured by the DEMETER spacecraft at altitudes of about 700 km is analyzed. Altogether, the analysis of 225 (87 fast forward, 31 fast reverse, 59 slow forward, and 48 slow reverse) shocks detected during 6.5 years of the DEMETER mission is presented. At first, the variation of an overall geomagnetic activity around the time of the shock arrival is investigated using the superposed epoch analysis. The results demonstrate increase of the geomagnetic activity related to the shock occurrence. The variation of wave intensity around the shock detection was investigated by two different techniques: i) using moving averages of the measured wave intensity, and ii) using principal component analysis. The obtained results indicate that the wave intensity variation depends strongly on the type of the shock, but it is typically limited to frequencies below about 10 kHz.

Název v anglickém jazyce

Influence of Interplanetary Shocks on ELF/VLF Waves Observed in the Earth's Magnetosphere

Popis výsledku anglicky

In this study, the influence of interplanetary (IP) shocks detected by the Wind spacecraft on the wave intensity in the frequency range up to 20 kHz measured by the DEMETER spacecraft at altitudes of about 700 km is analyzed. Altogether, the analysis of 225 (87 fast forward, 31 fast reverse, 59 slow forward, and 48 slow reverse) shocks detected during 6.5 years of the DEMETER mission is presented. At first, the variation of an overall geomagnetic activity around the time of the shock arrival is investigated using the superposed epoch analysis. The results demonstrate increase of the geomagnetic activity related to the shock occurrence. The variation of wave intensity around the shock detection was investigated by two different techniques: i) using moving averages of the measured wave intensity, and ii) using principal component analysis. The obtained results indicate that the wave intensity variation depends strongly on the type of the shock, but it is typically limited to frequencies below about 10 kHz.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

WDS&apos;18 Proceedings of Contributed Papers — Physics

ISBN

978-80-7378-374-7

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

8

Strana od-do

85-92

Název nakladatele

Matfyzpress

Místo vydání

Praha

Místo konání akce

Prague, Czech Republic

Datum konání akce

5. 6. 2018

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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