Spatial Correlations between Radio Aurora and 4278 Å Aurora Intensity

In order to study the spatial relation between 50MHz-radar echoes and visual auroral forms, a photometer observing auroral emissions at 4278Å was installed at Mizuho Station during the period from July to October, 1978. Several examples of the measurements are shown to discuss qualitative difference...

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Bibliographic Details
Main Authors: Kiyoshi Igarashi, Shigehiko Tsuzurahara
Format: Report
Language:English
Published: Radio Research Laboratories 1981
Subjects:
Mizuho
Mizuho Station
Memoirs of National Institute of Polar Research
Polar Research
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1131
http://id.nii.ac.jp/1291/00001131/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1131&item_no=1&attribute_id=18&file_no=1
Description
Summary:In order to study the spatial relation between 50MHz-radar echoes and visual auroral forms, a photometer observing auroral emissions at 4278Å was installed at Mizuho Station during the period from July to October, 1978. Several examples of the measurements are shown to discuss qualitative differences between the radio aurora and the optical auroras. It is shown that the correlation between optical and radio aurora intensities becomes poor in highly active aurora but is generally good for quiet aurora. Phenomena are found that the radio auroral intensities become low within auroral arcs.

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