Multi-Point Observation of Hiss Emerging From Lightning Whistlers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F21%3A00548872" target="_blank" >RIV/68378289:_____/21:00548872 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/21:10439895
Result on the web
<a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021JA029524" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021JA029524</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2021JA029524" target="_blank" >10.1029/2021JA029524</a>

Result language
angličtina
Original language name
Multi-Point Observation of Hiss Emerging From Lightning Whistlers
Original language description
We analyze continuous multi-point measurements of electromagnetic field waveforms onboard the Cluster spacecraft in order to contribute to the discussion on sources of plasmaspheric hiss, known as a shaping agent for the Earth radiation belts. In our case study we aim at finding sources of hiss observed close to the geomagnetic equator in the outer plasmasphere on the dayside. We find hiss to be triggered from whistlers of different spectral properties. Whistlers with the lowest observed dispersion arrive to different spacecraft with time delays indicating their origin in the northern hemisphere. Positions of source lightning discharges are then found using the time coincidences with the Word Wide Lightning Location Network data from three active thunderstorm regions in Europe. We find that subionospheric propagation of lightning atmospherics is necessary to explain the observations. Geographic locations of their ionospheric exit points then determine spectral properties of resulting unducted whistlers and triggered hiss. By this well documented chain of events starting with a lightning discharge in the atmosphere we confirm that magnetospherically reflecting whistlers and hiss triggered from them are among possible sources of plasmaspheric hiss.
Czech name
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Czech description
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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)

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

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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