Propagation of equatorial noise to low altitudes: Decoupling from the magnetosonic mode
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F16%3A00462957" target="_blank" >RIV/68378289:_____/16:00462957 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/16:10334282
Result on the web
<a href="http://dx.doi.org/10.1002/2016GL069582" target="_blank" >http://dx.doi.org/10.1002/2016GL069582</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/2016GL069582" target="_blank" >10.1002/2016GL069582</a>
Alternative languages
Result language
angličtina
Original language name
Propagation of equatorial noise to low altitudes: Decoupling from the magnetosonic mode
Original language description
Equatorial noise (often phenomenologically described as magnetosonic waves in the literature) is a natural electromagnetic emission, which is generated by instability of ion distributions and which can interact with electrons in the Van Allen radiation belts. We use multicomponent electromagnetic measurements of the DEMETER spacecraft to investigate if equatorial noise propagates inward down to the Earth. Analysis of a selected event recorded under disturbed geomagnetic conditions shows that equatorial noise can be observed at an altitude of 700 km, while propagating radially downward as a superposition of spectral lines from different distant sources observed at frequencies both below and above the local proton cyclotron frequency. Changes in the local ion composition encountered by the waves during their inward propagation disconnect the identified wave mode from the low-frequency magnetosonic mode. The local ion composition also induces a cutoff which prevents the waves from propagating down to the ground.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
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
43
Issue of the periodical within the volume
13
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
6694-6704
UT code for WoS article
000380901600003
EID of the result in the Scopus database
2-s2.0-84978139103