Longitudinal Dependence of Whistler Mode Electromagnetic Waves in the Earth's Inner Magnetosphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389458" target="_blank" >RIV/00216208:11320/18:10389458 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378289:_____/18:00491733

Výsledek na webu

<a href="https://doi.org/10.1029/2018JA025284" target="_blank" >https://doi.org/10.1029/2018JA025284</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2018JA025284" target="_blank" >10.1029/2018JA025284</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Longitudinal Dependence of Whistler Mode Electromagnetic Waves in the Earth's Inner Magnetosphere

Popis výsledku v původním jazyce

We use the measurements performed by the DEMETER (2004-010) and the Van Allen Probes (2012-016, still operating) spacecraft to investigate the longitudinal dependence of the intensity of whistler mode waves in the Earth&apos;s inner magnetosphere. We show that a significant longitudinal dependence is observed inside the plasmasphere on the nightside, primarily in the frequency range 400 Hz to 2 kHz. On the other hand, almost no longitudinal dependence is observed on the dayside. The obtained results are compared to the lightning occurrence rate provided by the Optical Transient Detector/Lightning Imaging Sensor mission normalized by a factor accounting for the ionospheric attenuation. The agreement between the two dependencies indicates that lightning-generated electromagnetic waves may be responsible for of the observed effect, thus substantially affecting the overall wave intensity in the given frequency range. Finally, we show that the longitudinal dependence is most pronounced for waves with oblique wave of normal angles.

Název v anglickém jazyce

Longitudinal Dependence of Whistler Mode Electromagnetic Waves in the Earth's Inner Magnetosphere

Popis výsledku anglicky

We use the measurements performed by the DEMETER (2004-010) and the Van Allen Probes (2012-016, still operating) spacecraft to investigate the longitudinal dependence of the intensity of whistler mode waves in the Earth&apos;s inner magnetosphere. We show that a significant longitudinal dependence is observed inside the plasmasphere on the nightside, primarily in the frequency range 400 Hz to 2 kHz. On the other hand, almost no longitudinal dependence is observed on the dayside. The obtained results are compared to the lightning occurrence rate provided by the Optical Transient Detector/Lightning Imaging Sensor mission normalized by a factor accounting for the ionospheric attenuation. The agreement between the two dependencies indicates that lightning-generated electromagnetic waves may be responsible for of the observed effect, thus substantially affecting the overall wave intensity in the given frequency range. Finally, we show that the longitudinal dependence is most pronounced for waves with oblique wave of normal angles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

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 periodika

Journal of Geophysical Research: Space Physics

ISSN

2169-9380

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

6562-6575

Kód UT WoS článku

000445731300030

EID výsledku v databázi Scopus

2-s2.0-85052366809