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Reation of the Slant E Condition (SEC) in polar cap ionograms to the solar wind sector structure

Technical Report ·
OSTI ID:7304724
;
The Slant E Condition (SEC) at Godhavn (Greenland) is shown to correlate with the solar wind sector structure, the occurrence rate of SEC being large a few days after passage of a sector boundary and declining in the trailing part of the sector. Analysis of SEC occurrence in terms of the solar wind velocity, Vsw, measured on board HEOS-2 indicates that nearly no SEC occurs when Vsw is less than 350 to 400 km/s (in apparent agreement with the interpretation of SEC in terms of the Farley--Buneman instability). (auth)
Research Organization:
Danish Space Research Inst., Lyngby
OSTI ID:
7304724
Report Number(s):
N-76-22803
Country of Publication:
United States
Language:
English

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Related Subjects

640104 -- Astrophysics & Cosmology-- Solar Phenomena
640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CORRELATIONS
DISTURBANCES
E REGION
EARTH ATMOSPHERE
ELECTRIC FIELDS
INSTABILITY
IONOSPHERE
PLANETARY IONSPHERES
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SOLAR ACTIVITY
SOLAR WIND
TWO-STREAM INSTABILITY