Properties of Hall-MHD Turbulence at Sub-Ion Scales: Spectral Transfer Analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552260" target="_blank" >RIV/67985815:_____/21:00552260 - isvavai.cz</a>
Alternative codes found
RIV/68378289:_____/21:00551573
Result on the web
<a href="http://hdl.handle.net/11104/0327390" target="_blank" >http://hdl.handle.net/11104/0327390</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/atmos12121632" target="_blank" >10.3390/atmos12121632</a>
Alternative languages
Result language
angličtina
Original language name
Properties of Hall-MHD Turbulence at Sub-Ion Scales: Spectral Transfer Analysis
Original language description
We present results of a multiscale study of Hall-magnetohydrodynamic (MHD) turbulence, carried out on a dataset of compressible nonlinear 2D Hall-MHD numerical simulations of decaying Alfvenic turbulence. For the first time, we identify two distinct regimes of fully developed turbulence. In the first one, the power spectrum of the turbulent magnetic fluctuations at sub-ion scales exhibits a power law with a slope of & SIM,-2.9, typically observed both in solar wind and in magnetosheath turbulence. The second regime, instead, shows a slope of -7/3, in agreement with classical theoretical models of Hall-MHD turbulence. A spectral-transfer analysis reveals that the latter regime occurs when the energy transfer rate at sub-ion scales is dominated by the Hall term, whereas in the former regime, the governing process is the dissipation (and the system exhibits large intermittency). Results of this work are relevant to the space plasma community, as they may potentially reconcile predictions from theoretical models with results from numerical simulations and spacecraft observations.
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Atmosphere
ISSN
2073-4433
e-ISSN
2073-4433
Volume of the periodical
12
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
1632
UT code for WoS article
000735809200001
EID of the result in the Scopus database
2-s2.0-85121964235