Skip to Main content Skip to Navigation
Journal articles

Transionospheric attenuation of 100 kHz radio waves inferred from satellite and ground based observations

Abstract : Around fifty LORAN (LOng RAnge Navigation) transmitters in the northern hemisphere currently launch continuously pulsed 100 kHz radio waves into the Earth's atmosphere for marine navigation. It is discovered that the 100 kHz radio waves from the LORAN transmissions can be detected by the DEMETER satellite at an altitude of $660 km above the transmitters. These novel electric field measurements in space enable the determination of the nocturnal transionospheric attenuation by comparison with ground based electric field measurements. The electric field measurements on the satellite indicate that the nocturnal transionospheric attenuation of 100 kHz radio waves from LORAN transmissions is equivalent to a nocturnal subionospheric attenuation of the 100 kHz radio waves at a distance of $7-9 Mm. The radio waves exhibit an average subionospheric attenuation of $5 dB/Mm and it is concluded that the nocturnal transionospheric attenuation of 100 kHz radio waves is $35-45 dB. This result enables future space missions to quantify the intensity of lightning discharges associated with transient luminous events and terrestrial gray flashes.
Document type :
Journal articles
Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-03037240
Contributor : Nathalie Pothier <>
Submitted on : Thursday, December 3, 2020 - 8:13:08 AM
Last modification on : Friday, December 4, 2020 - 3:22:34 AM

File

2008GL036988.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Martin Fullekrug, Michel Parrot, Matthew Ash, Ivan Astin, Paul Williams, et al.. Transionospheric attenuation of 100 kHz radio waves inferred from satellite and ground based observations. Geophysical Research Letters, American Geophysical Union, 2009, 36 (6), ⟨10.1029/2008GL036988⟩. ⟨insu-03037240⟩

Share

Metrics

Record views

49

Files downloads

16