Articles | Volume 38, issue 3
https://doi.org/10.5194/angeo-38-765-2020
https://doi.org/10.5194/angeo-38-765-2020
Regular paper
 | 
24 Jun 2020
Regular paper |  | 24 Jun 2020

Low-altitude frequency-banded equatorial emissions observed below the electron cyclotron frequency

Mohammed Y. Boudjada, Patrick H. M. Galopeau, Sami Sawas, Valery Denisenko, Konrad Schwingenschuh, Helmut Lammer, Hans U. Eichelberger, Werner Magnes, and Bruno Besser

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Cited articles

An, X., Bortnik, J., Van Compernolle, B., Decyk, V., and Thorne, R.: Electrostatic and whistler instabilities excited by an electron beam, Phys. Plasmas, 24, 072116, https://doi.org/10.1063/1.4986511, 2017. a
Bell, T. F. and Ngo, H. D.: Electrostatic lower hybrid waves excited by electromagnetic whistler mode waves scattering from planar magnetic-field-aligned plasma density irregularities, J. Geophys. Res., 95, 149–172, 1990. a
Boudjada, M. Y., Biagi, P. F., Al-Haddad, E., Galopeau, P. H. M., Besser, B., Wolbang, D., Prattes, G., Eichelberger, H., Stangl, G., Parrot, M., and Schwingenschuh, K.: Reception conditions of low frequency (LF) transmitter signals onboard DEMETER micro-satellite, Phys. Chem. Earth, 102, 70–79, 2017. a
Brown, L. W.: The galactic radio spectrum between 130 kHz and 2600 kHz, Astrophys. J., 180, 359–370, 1973. a
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In this paper, we report on observations of frequency-banded wave emissions by ICE (Instrument Champ Électrique) on board DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions). We distinguish two components: positive and negative frequency drift rates and multiple spaced frequency bands near the magnetic equatorial plane. We show and discuss the non-free-space DEMETER frequency-banded emissions and the free-space terrestrial kilometric radiation.