Properties of AKR-Like Emissions Recorded by the Low Altitude Satellite DEMETER During 6.5 Years

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F22%3A00558853" target="_blank" >RIV/68378289:_____/22:00558853 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/22:10456743

Result on the web

<a href="https://hal-insu.archives-ouvertes.fr/insu-03697281" target="_blank" >https://hal-insu.archives-ouvertes.fr/insu-03697281</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2022JA030495" target="_blank" >10.1029/2022JA030495</a>

Result language

angličtina

Original language name

Properties of AKR-Like Emissions Recorded by the Low Altitude Satellite DEMETER During 6.5 Years

Original language description

Normally, auroral kilometric radiation (AKR) which is emitted in the auroral zones escapes from the Earth. But since a few decades very similar radiations are observed by ground-based receivers and by satellites at altitudes below the AKR generation area. They are called leaked AKR or AKR-like emissions because it is expected that there are linked to AKR. This paper deals with observations of such AKR-like emissions observed in the auroral zones (in the North and in the South) by the low-altitude satellite DEMETER. In total, 2,526 events have been recorded during 6.5 years. These events are not very rare as they occur at least 2% of the time. Although this data set has a severe flaw due to a latitudinal constraint, it was possible to draw interesting properties of these emissions. In fact they are very similar to usual AKR observed at much higher altitudes during auroral activities (the same frequency range, magnetic local time (MLT) sector, and invariant latitude). The main difference concerns a strong asymmetry between the Northern and the Southern hemispheres: (a) the number of AKR-like emissions in the Northern hemisphere is 32% larger than in the Southern hemisphere but this percentage decreases when the auroral activity increases, and (b) there is an important seasonal effect because the number of events decreases during the winter season both in the North and in the South.

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/GA21-01813S" target="_blank" >GA21-01813S: Anthropogenic electromagnetic emissions and their effects on the Earth’s inner magnetosphere</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

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

127

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

e2022JA030495

UT code for WoS article

000813629700001

EID of the result in the Scopus database

2-s2.0-85132853137