EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F19%3A00511925" target="_blank" >RIV/68378289:_____/19:00511925 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/19:10407569
Result on the web
<a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL083024" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL083024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2019GL083024" target="_blank" >10.1029/2019GL083024</a>
Alternative languages
Result language
angličtina
Original language name
EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase
Original language description
Equatorial noise (EN) emissions are observed inside and outside the plasmapause. EN emissions are referred to as magnetosonic mode waves. Using data from Van Allen Probes and Arase, we found conversion from EN emissions to electromagnetic ion cyclotron (EMIC) waves in the plasmasphere and in the topside ionosphere. A low-frequency part of EN emissions becomes EMIC waves through branch splitting of EN emissions, and the mode conversion from EN to EMIC waves occurs around the frequency of M/Q = 2 (deuteron and/or alpha particles) cyclotron frequency. These processes result in plasmaspheric EMIC waves. We investigated the ion composition ratio by characteristic frequencies of EN emissions and EMIC waves and obtained ion composition ratios. We found that the maximum composition ratio of M/Q = 2 ions is similar to 10% below 3,000 km. The quantitative estimation of the ion composition will contribute to improving the plasma model of the deep plasmasphere and the topside ionosphere.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LTAUSA17070" target="_blank" >LTAUSA17070: Electromagnetic waves in planetary ionospheres and magnetospheres</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geophysical Research Letters
ISSN
0094-8276
e-ISSN
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Volume of the periodical
46
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
5662-5669
UT code for WoS article
000477616200004
EID of the result in the Scopus database
2-s2.0-85067680130