Deep learning model of hiss waves in the plasmasphere and plumes and their effects on radiation belt electrons
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F23%3A00575968" target="_blank" >RIV/68378289:_____/23:00575968 - isvavai.cz</a>
Result on the web
<a href="https://www.frontiersin.org/articles/10.3389/fspas.2023.1231578/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fspas.2023.1231578/full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fspas.2023.1231578" target="_blank" >10.3389/fspas.2023.1231578</a>
Alternative languages
Result language
angličtina
Original language name
Deep learning model of hiss waves in the plasmasphere and plumes and their effects on radiation belt electrons
Original language description
Hiss waves play an important role in removing energetic electrons from Earth's radiation belts by precipitating them into the upper atmosphere. Compared to plasmaspheric hiss that has been studied extensively, the evolution and effects of plume hiss are less understood due to the challenge of obtaining their global observations at high cadence. In this study, we use a neural network approach to model the global evolution of both the total electron density and the hiss wave amplitudes in the plasmasphere and plume. After describing the model development, we apply the model to a storm event that occurred on 14 May 2019 and find that the hiss wave amplitude first increased at dawn and then shifted towards dusk, where it was further excited within a narrow region of high density, namely, a plasmaspheric plume. During the recovery phase of the storm, the plume rotated and wrapped around Earth, while the hiss wave amplitude decayed quickly over the nightside. Moreover, we simulated the overall energetic electron evolution during this storm event, and the simulated flux decay rate agrees well with the observations. By separating the modeled plasmaspheric and plume hiss waves, we quantified the effect of plume hiss on energetic electron dynamics. Our simulation demonstrates that, under relatively quiet geomagnetic conditions, the region with plume hiss can vary from L = 4 to 6 and can account for up to an 80% decrease in electron fluxes at hundreds of keV at L > 4 over 3 days. This study highlights the importance of including the dynamic hiss distribution in future simulations of radiation belt electron dynamics.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Astronomy and Space Sciences
ISSN
2296-987X
e-ISSN
2296-987X
Volume of the periodical
10
Issue of the periodical within the volume
Aug.
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
1231578
UT code for WoS article
001062474200001
EID of the result in the Scopus database
2-s2.0-85169904466