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Observation by the incoherent scatter technique of the hot spots in the auroral zone ionosphere
Author(s) -
Kofman W.,
Lathuillere C.
Publication year - 1987
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/gl014i011p01158
Subject(s) - incoherent scatter , ionosphere , electric field , earth's magnetic field , computational physics , geophysics , physics , joule heating , spectral line , f region , ion , joule effect , optics , geology , magnetic field , astronomy , quantum mechanics
In this paper, we show a first set of incoherent‐scatter data measured at EISCAT, showing profiles of very high ion temperature (greater than 8000K), observed along geomagnetic field lines. We analyze the incoherent‐scatter spectra, their form and the influence of the ionospheric electric field. We estimate the Joule heating energy input by two methods: from the electric field and from direct measurements of ion temperature. These estimations show that our measurements can be explained by the frictional heating between fast moving species.