Lightning Contribution to Overall Whistler Mode Wave Intensities in the Plasmasphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F19%3A00507729" target="_blank" >RIV/68378289:_____/19:00507729 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/19:10405924

Výsledek na webu

<a href="https://hal-insu.archives-ouvertes.fr/insu-02263541/file/Z-hlava_et_al-2019-Geophysical_Research_Letters.pdf" target="_blank" >https://hal-insu.archives-ouvertes.fr/insu-02263541/file/Z-hlava_et_al-2019-Geophysical_Research_Letters.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2019GL083918" target="_blank" >10.1029/2019GL083918</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lightning Contribution to Overall Whistler Mode Wave Intensities in the Plasmasphere

Popis výsledku v původním jazyce

Electromagnetic waves generated by lightning propagate into the plasmasphere as dispersed whistlers. They can therefore influence the overall wave intensity in space, which, in turn, is important for dynamics of the Van Allen radiation belts. We analyze spacecraft measurements in low‐Earth orbit as well as in high‐altitude equatorial region, together with a ground‐based estimate of lightning activity. We accumulate wave intensities when the spacecraft are magnetically connected to thunderstorms and compare them with measurements obtained when thunderstorms are absent. We show that strong lightning activity substantially affects the wave intensity in a wide range of L‐shells and altitudes. The effect is observed mainly between 500 Hz and 4 kHz, but its frequency range strongly varies with L‐shell, extending up to 12 kHz for L lower than 3. The effect is stronger in the afternoon, evening, and night sectors, consistent with more lightning and easier wave propagation through the ionosphere.

Název v anglickém jazyce

Lightning Contribution to Overall Whistler Mode Wave Intensities in the Plasmasphere

Popis výsledku anglicky

Electromagnetic waves generated by lightning propagate into the plasmasphere as dispersed whistlers. They can therefore influence the overall wave intensity in space, which, in turn, is important for dynamics of the Van Allen radiation belts. We analyze spacecraft measurements in low‐Earth orbit as well as in high‐altitude equatorial region, together with a ground‐based estimate of lightning activity. We accumulate wave intensities when the spacecraft are magnetically connected to thunderstorms and compare them with measurements obtained when thunderstorms are absent. We show that strong lightning activity substantially affects the wave intensity in a wide range of L‐shells and altitudes. The effect is observed mainly between 500 Hz and 4 kHz, but its frequency range strongly varies with L‐shell, extending up to 12 kHz for L lower than 3. The effect is stronger in the afternoon, evening, and night sectors, consistent with more lightning and easier wave propagation through the ionosphere.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

8607-8616

Kód UT WoS článku

000483812500003

EID výsledku v databázi Scopus

2-s2.0-85070777857