Occurrence of EMIC Waves in the Magnetosphere According to Their Distance to the Magnetopause
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F21%3A00539531" target="_blank" >RIV/68378289:_____/21:00539531 - isvavai.cz</a>
Výsledek na webu
<a href="https://oadoi.org/10.1029/2020GL090921" target="_blank" >https://oadoi.org/10.1029/2020GL090921</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2020GL090921" target="_blank" >10.1029/2020GL090921</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Occurrence of EMIC Waves in the Magnetosphere According to Their Distance to the Magnetopause
Popis výsledku v původním jazyce
Wave growth of electromagnetic ion cyclotron (EMIC) emissions observed in the outer magnetosphere is mainly controlled by compression events resulting from solar wind dynamic pressure pulses. During such events wave growth is expected to be maximum close to the magnetopause. In previous studies, distribution of EMIC waves was analyzed according to their distance from the Earth, which is inadequate for studying the magnetopause region. We map a data set of EMIC waves observed by Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft according to their distance from case‐by‐case modeled magnetopause. EMIC occurrence rate is found to be maximum within two Earth radii from the magnetopause and then it linearly decreases with an increasing distance, especially close to the local noon. Asymmetries between the morning and evening magnetic sectors are explained by asymmetries in the upstream conditions and by the presence of another EMIC population of a different origin.
Název v anglickém jazyce
Occurrence of EMIC Waves in the Magnetosphere According to Their Distance to the Magnetopause
Popis výsledku anglicky
Wave growth of electromagnetic ion cyclotron (EMIC) emissions observed in the outer magnetosphere is mainly controlled by compression events resulting from solar wind dynamic pressure pulses. During such events wave growth is expected to be maximum close to the magnetopause. In previous studies, distribution of EMIC waves was analyzed according to their distance from the Earth, which is inadequate for studying the magnetopause region. We map a data set of EMIC waves observed by Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft according to their distance from case‐by‐case modeled magnetopause. EMIC occurrence rate is found to be maximum within two Earth radii from the magnetopause and then it linearly decreases with an increasing distance, especially close to the local noon. Asymmetries between the morning and evening magnetic sectors are explained by asymmetries in the upstream conditions and by the presence of another EMIC population of a different origin.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-05285S" target="_blank" >GA18-05285S: Magnetosferické emise typu EMIC</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Geophysical Research Letters
ISSN
0094-8276
e-ISSN
1944-8007
Svazek periodika
48
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
8
Strana od-do
e2020GL090921
Kód UT WoS článku
000620058900018
EID výsledku v databázi Scopus
2-s2.0-85101094376