Ducted Propagation of Whistler Mode Waves Observed by the Arase Satellite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F25%3A00619862" target="_blank" >RIV/68378289:_____/25:00619862 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/25:10510425

Result on the web

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JA033359" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JA033359</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2024JA033359" target="_blank" >10.1029/2024JA033359</a>

Result language

angličtina

Original language name

Ducted Propagation of Whistler Mode Waves Observed by the Arase Satellite

Original language description

Ducted propagation of whistler-mode waves has attracted attention as a process that explains how whistler-mode waves propagate to high latitudes, resulting in the loss of relativistic electrons to the atmosphere and changes in the upper atmosphere due to electron precipitation. However, few studies have compared the observed density ducts and wave propagation characteristics to theoretical predictions in detail, particularly for low-density ducts. We present four patterns of ducting modes as electron density increases or decreases, as observed by the Arase satellite. (a) Lower-band (LB) waves propagating along a high-density duct with small wave normal angles (WNAs), (b) LB waves propagating along a low-density duct with a wide distribution of WNAs up to above the Gendrin Angle, (c) LB waves propagating along a low-density duct with WNAs around the Gendrin Angle, and (d) upper-band waves propagating along a low-density duct with small WNAs. We derived the WNAs for these cases, and their characteristics were consistent with the ducting theory. Based on this theory, we calculated the frequency range in which the waves were likely to be trapped in the ducts. We compared this frequency range with the power spectra of the recorded whistler-mode waves and found consistency between the theory and observations. Furthermore, it is suggested that the WNAs for cases (b) and (c) have azimuthal distributions based on a comparison of the WNA analysis of the simple simulated waveforms and the observed data.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GX25-18095X" target="_blank" >GX25-18095X: Unusual propagation modes of electromagnetic waves in the Solar system</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Geophysical Research-Space Physics

ISSN

2169-9380

e-ISSN

2169-9402

Volume of the periodical

130

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

16

Pages from-to

e2024JA033359

UT code for WoS article

001487826500001

EID of the result in the Scopus database

2-s2.0-105005216654