BEHAVIOR OF A HIGH LATITUDE HYDROMAGNETIC WAVE PHENOMENON OBSERVED AT CONJUGATE LOCATIONS.

The study is a summary of the characteristics of the pc 1 geomagnetic field pulsation phenomenon in the 0.15 to 3.5 c/s frequency range with emphasis on the behavior at auroral latitudes. That the detected emissions are manifestations of resonant hydromagnetic wave propagation on the earth's fi...

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Bibliographic Details
Main Author: Campbell,W. H.
Other Authors: EARTH SCIENCES LABS BOULDER COLO
Format: Text
Language:English
Published: 1967
Subjects:
Atmospheric Physics
(*IONOSPHERE
MAGNETOHYDRODYNAMICS)
IONOSPHERIC DISTURBANCES
ELECTRON DENSITY
ABSORPTION
CORRELATION TECHNIQUES
HIGH ALTITUDE
CANADA
ANTARCTIC REGIONS
AURORAE
ATTENUATION
ELECTROMAGNETIC RADIATION
IONOSPHERIC PROPAGATION
Antarctic
Canada
Antarc*
Online Access:http://www.dtic.mil/docs/citations/AD0666953
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0666953
Description
Summary:The study is a summary of the characteristics of the pc 1 geomagnetic field pulsation phenomenon in the 0.15 to 3.5 c/s frequency range with emphasis on the behavior at auroral latitudes. That the detected emissions are manifestations of resonant hydromagnetic wave propagation on the earth's field lines is evidenced by the preferred simultaneous occurrence at conjugate field locations. The occurrence times of high latitude emissions indicate that the excitation is on the sun side of the magnetosphere. The resonance frequency changes uniformly with local time. There seems to be coupling to other than field-guided propagation modes when the waves reach ionospheric altitudes. Large auroral associated absorption appreciably attenuates the signals. Present problems in understanding the pc 1 phenomenon are discussed. (Author)

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