Title
Combined radar observations of equatorial electrojet irregularities at Jicamarca
Date Issued
01 January 2007
Access level
open access
Resource Type
journal article
Author(s)
Hysell D.L.
Drexler J.
Shume E.B.
Chau J.L.
Vlasov M.
Cuevas R.
Heinselman C.
Instituto Geofísico Del Perand
Publisher(s)
Copernicus GmbH
Abstract
Daytime equatorial electrojet plasma irregularities were investigated using five distinct radar diagnostics at Jicamarca including range-time-intensity (RTI) mapping, Faraday rotation, radar imaging, oblique scattering, and multiple-frequency scattering using the new AMISR prototype UHF radar. Data suggest the existence of plasma density striations separated by 3–5 km and propagating slowly downward. The striations may be caused by neutral atmospheric turbulence, and a possible scenario for their formation is discussed. The Doppler shifts of type 1 echoes observed at VHF and UHF frequencies are compared and interpreted in light of a model of Farley Buneman waves based on kinetic ions and fluid electrons with thermal effects included. Finally, the up-down and east-west asymmetries evident in the radar observations are described and quantified.
Start page
457
End page
473
Volume
25
Issue
2
Language
English
OCDE Knowledge area
Química física
Meteorología y ciencias atmosféricas
Scopus EID
2-s2.0-33947105478
Source
Annales Geophysicae
ISSN of the container
09927689
Sponsor(s)
National Science Foundation NSF
Directorate for Geosciences 0432565, 0436114 GEO
Sources of information:
Directorio de Producción Científica
Scopus