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Title: THE DYNAMICAL MORPHOLOGY OF THE AURORA POLARIS

Abstract

Simultaneous changes of auroral form, brightness. and motion over the whole polar region are studied, using IGY all-sky camera records from widely distributed stations in eastern Siberia, Alaska, Canada, northern United States (south of the Canadian border), and Greenland. During very quiet periods. and sometimes for brief intervals during magnetic storms, the aurora may consist of faint, diffuse, quiet arcs extending along the whole of the auroral zone that is in darkness. The onset of a polar magnetic substorm suddenly changes this quiet state of the aurora, especially on the morning part of the auroral zone. The aurora becomes active all along the zone, but in different ways at different local times, that is, at different positions relative to the midnight meridian. Active auroral displays last for a few hours. 1 to 3, for example. Great auroral displays consist of an intermittent succession of such active periods. Large-scale dynamical features of the auroras, such as the breakup, formation of large loops, and drift motions. are discussed. (auth)

Authors:
Publication Date:
Research Org.:
Univ. of Alaska, College
Sponsoring Org.:
USDOE
OSTI Identifier:
4748362
NSA Number:
NSA-17-016293
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research (U.S.)
Additional Journal Information:
Journal Volume: Vol: 68; Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
GEOLOGY, MINERALOGY, AND METEOROLOGY; AURORAE; CAMERAS; CONFIGURATION; DEFORMATION; EARTH; INTERACTIONS; LUMINESCENCE; MAGNETIC FIELDS; RECORDING SYSTEMS; TURBULENCE

Citation Formats

Akasofu, S. THE DYNAMICAL MORPHOLOGY OF THE AURORA POLARIS. Country unknown/Code not available: N. p., 1963. Web. doi:10.1029/JZ068i006p01667.
Akasofu, S. THE DYNAMICAL MORPHOLOGY OF THE AURORA POLARIS. Country unknown/Code not available. https://doi.org/10.1029/JZ068i006p01667
Akasofu, S. 1963. "THE DYNAMICAL MORPHOLOGY OF THE AURORA POLARIS". Country unknown/Code not available. https://doi.org/10.1029/JZ068i006p01667.
@article{osti_4748362,
title = {THE DYNAMICAL MORPHOLOGY OF THE AURORA POLARIS},
author = {Akasofu, S},
abstractNote = {Simultaneous changes of auroral form, brightness. and motion over the whole polar region are studied, using IGY all-sky camera records from widely distributed stations in eastern Siberia, Alaska, Canada, northern United States (south of the Canadian border), and Greenland. During very quiet periods. and sometimes for brief intervals during magnetic storms, the aurora may consist of faint, diffuse, quiet arcs extending along the whole of the auroral zone that is in darkness. The onset of a polar magnetic substorm suddenly changes this quiet state of the aurora, especially on the morning part of the auroral zone. The aurora becomes active all along the zone, but in different ways at different local times, that is, at different positions relative to the midnight meridian. Active auroral displays last for a few hours. 1 to 3, for example. Great auroral displays consist of an intermittent succession of such active periods. Large-scale dynamical features of the auroras, such as the breakup, formation of large loops, and drift motions. are discussed. (auth)},
doi = {10.1029/JZ068i006p01667},
url = {https://www.osti.gov/biblio/4748362}, journal = {Journal of Geophysical Research (U.S.)},
number = ,
volume = Vol: 68,
place = {Country unknown/Code not available},
year = {Fri Mar 15 00:00:00 EST 1963},
month = {Fri Mar 15 00:00:00 EST 1963}
}