Whistler Mode Wave-Driven Electron Scattering Properties From ELFIN Measurements of the Precipitation Ratio

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F25%3A00619470" target="_blank" >RIV/68378289:_____/25:00619470 - isvavai.cz</a>

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JA033363" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JA033363</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2024JA033363" target="_blank" >10.1029/2024JA033363</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Whistler Mode Wave-Driven Electron Scattering Properties From ELFIN Measurements of the Precipitation Ratio

Popis výsledku v původním jazyce

Whistler-mode chorus and hiss waves play an important role in Earth's radiation belt electron dynamics. Direct measurements of whistler wave-driven electron precipitation and the resultant pitch angle distribution were previously limited by the insufficient resolution of low Earth orbit satellites. In this study, we use recent measurements from the Electron Losses and Fields INvestigation CubeSats, which provide energy- and pitch angle-resolved electron distributions to statistically evaluate electron scattering properties driven by whistler waves. Our survey indicates that events with increasing precipitating-to-trapped flux ratios (evaluated at 63 keV unless otherwise specified) correlate with increasing trapped flux at energies up to similar to 750 keV. Weak precipitation events (precipitation ratio <0.2) are evenly distributed, while stronger precipitation events tend to be concentrated at L > 5 over midnight-to-noon local times during disturbed geomagnetic conditions. These results are crucial for characterizing the whistler-mode wave driven electron scattering properties and evaluating its impact on the ionosphere.

Název v anglickém jazyce

Whistler Mode Wave-Driven Electron Scattering Properties From ELFIN Measurements of the Precipitation Ratio

Popis výsledku anglicky

Whistler-mode chorus and hiss waves play an important role in Earth's radiation belt electron dynamics. Direct measurements of whistler wave-driven electron precipitation and the resultant pitch angle distribution were previously limited by the insufficient resolution of low Earth orbit satellites. In this study, we use recent measurements from the Electron Losses and Fields INvestigation CubeSats, which provide energy- and pitch angle-resolved electron distributions to statistically evaluate electron scattering properties driven by whistler waves. Our survey indicates that events with increasing precipitating-to-trapped flux ratios (evaluated at 63 keV unless otherwise specified) correlate with increasing trapped flux at energies up to similar to 750 keV. Weak precipitation events (precipitation ratio <0.2) are evenly distributed, while stronger precipitation events tend to be concentrated at L > 5 over midnight-to-noon local times during disturbed geomagnetic conditions. These results are crucial for characterizing the whistler-mode wave driven electron scattering properties and evaluating its impact on 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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

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

2169-9402

Svazek periodika

130

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

e2024JA033363

Kód UT WoS článku

001470961800001

EID výsledku v databázi Scopus

2-s2.0-105005201318