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Автор Wasserfall, K. F.
Дата выпуска 1943
dc.description Introduction—Absolute storminess, AS, means the diurnal sum of positive and negative storminess, and is one of the best expressions for magnetic activity. Since 1916 daily values for AS, for D, H, and V, have been published in our year‐books, but so far no attempt has been made to make further use of these valuable data, except that AS for D has been regularly used as the basis for our contribution to the international character‐number, C. For various reasons it has been considered desirable to devise a new international measure for magnetic activity in addition to the character‐number, C. There is no doubt that AS would be a good basis for this new international measure except that few observatories compute data for AS. For this reason the Assembly at Washington in September 1939 decided to base the international cooperation, not on AS, but on the so‐called three‐hour‐range index K. As the work required for deriving the K‐index is much less than that connected with working out data for AS, this scheme for international cooperation seems to have been generally accepted, and—judging from results already published—there is every reason to believe that the K‐index more or less covers what is required for the new measure for magnetic activity.
Формат application.pdf
Копирайт Copyright 1943 by the American Geophysical Union.
Название Magnetic activity at Dombås based on absolute storminess for the horizontal component
Тип article
DOI 10.1029/TE048i001p00029
Electronic ISSN 0096-8013
Print ISSN 0096-8013
Журнал Terrestrial Magnetism and Atmospheric Electricity
Том 48
Первая страница 29
Последняя страница 39
Выпуск 1
Библиографическая ссылка Trumpy, B., K. F.Wasserfall, Results from the magnetic station at Dombås, 1939No. 20Pub. Norsk Inst. Kosm. Fys., Bergen, 1941.
Библиографическая ссылка Krogness, O., K. F.Wasserfall, Results from the magnetic station at DombåsNo. 9Pub. Norsk Inst. Kosm. Fys., Bergen, 1936.
Библиографическая ссылка Bartels, J., N. H.Heck, H. F.Johnston, The three‐hour‐range index measuring geomagnetic activity, Terr. Mag., 44, 411–454, 1939.

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