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DEMETER observations of EM emissions related to thunderstorms

Parrot, M., J.-J. Berthelier, J.-P. Lebreton, R. A. Treumann, and J.-L. Rauch (2008), DEMETER observations of EM emissions related to thunderstorms, Space Science Reviews, doi:10.1007/s11214-008-9347-y.

The paper is related to specific emissions at frequency <3 MHz observed by
the low altitude satellite DEMETER in relation with the thunderstorm activity. At its
altitude (∼700 km), the phenomena observed on the E-field and B-field spectrograms
recorded by the satellite are mainly dominated by whistlers. Particular observations performed
by DEMETER are reported. It concerns multiple hop whistlers and interaction between
whistlers and lower hybrid noise. Two new phenomena discovered by the satellite are
discussed. First, V-shaped emissions up to 20 kHz are observed at mid-latitude during night
time. They are centered at the locations of intense thunderstorm activity. By comparison
with VLF saucers previously observed by other satellites in the auroral zones it is hypothesized
that the source region is located below the satellite and that the triggering mechanism
is due to energetic electrons accelerated during sprite events. Second, emissions at frequency ∼2 MHz are observed at the time of intense whistlers. These emissions are produced in the
lower ionosphere in probable relation with Transient Luminous Events (TLEs).
Keywords Lightning · Ionosphere · VLF and HF emissions: whistlers
  author = {M. Parrot and J.-J. Berthelier and J.-P. Lebreton and R. A. Treumann and J.-L. Rauch},
  journal = {Space Science Reviews},
  title = {{DEMETER observations of EM emissions related to thunderstorms}},
  year = {2008},
  doi = {10.1007/s11214-008-9347-y},
%0 Journal Article
%A Parrot, M.
%A Berthelier, J.-J.
%A Lebreton, J.-P.
%A Treumann, R. A.
%A Rauch, J.-L.
%D 2008
%J Space Science Reviews
%T DEMETER observations of EM emissions related to thunderstorms
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Printed 14. Aug 2020 20:28