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ABSTRACT From all-sky camera recordings taken at this Observatory (geographic co-ordinates 67.8° N., 20.4° E.; geomagnetic co-ordinates 65.3° N., 115.5° E.) during the period December 1958 –
March 1961 the directions of 366 quiet auroral arcs were measured. Only arcs extending from horizon to horizon, or at least covering an angle of view of about 100° for the most distant arcs
and having an elevation angle of more than 15° for the highest point, were used in the analysis. Access through your institution Buy or subscribe This is a preview of subscription content,
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OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS CHARACTERIZATION OF THE DECAMETRE SKY AT
SUBARCMINUTE RESOLUTION Article 06 May 2024 NIGHT-TIME MEASUREMENTS OF ASTRONOMICAL SEEING AT DOME A IN ANTARCTICA Article 29 July 2020 A SOLAR CYCLE CLOCK FOR EXTREME SPACE WEATHER Article
Open access 08 April 2024 REFERENCES * Störmer, C., _The Polar Aurora_ (Oxford, 1955). MATH Google Scholar * Alfvén, H., _Cosmical Electrodynamics_ (Oxford, 1950). MATH Google Scholar *
Lassen, K., _Nature_, 184, 1375 (1959). Article ADS Google Scholar Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Kiruna Geophysical Observatory, Kiruna C, Sweden BENGT
HULTQVIST, ALV EGELAND & GEORG GUSTAFSSON Authors * BENGT HULTQVIST View author publications You can also search for this author inPubMed Google Scholar * ALV EGELAND View author
publications You can also search for this author inPubMed Google Scholar * GEORG GUSTAFSSON View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND
PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE HULTQVIST, B., EGELAND, A. & GUSTAFSSON, G. A Morning Discontinuity in the Orientation of Quiet Auroral Arcs.
_Nature_ 192, 956–957 (1961). https://doi.org/10.1038/192956a0 Download citation * Issue Date: 09 December 1961 * DOI: https://doi.org/10.1038/192956a0 SHARE THIS ARTICLE Anyone you share
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