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Wave‐induced burst precipitation events detected with a digital ionosonde
Author(s) -
Jarvis M. J.,
Smith A. J.,
Berkey F. T.,
Carpenter D. L.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i001p00061
Subject(s) - ionosonde , ionosphere , physics , precipitation , magnetosphere , flux (metallurgy) , plasma , phase (matter) , atmospheric sciences , geophysics , computational physics , meteorology , nuclear physics , materials science , electron density , quantum mechanics , metallurgy
Initial results are presented from two methods whereby burst precipitation events in the lower ionosphere, almost certainly induced by VLF wave‐particle interactions in the magnetosphere, have been detected using a ground‐based digital ionosonde. In the first method, HF echoes are received above the critical frequency of the surrounding plasma; particle energies and the location and extent of the plasma enhancement may be deduced. In the second method, a rapid decrease in the phase of ionospheric echoes is observed due to refractive index changes along the echo path; particle energies, the duration of the precipitation event and the precipitation energy flux can be estimated.