๐”– Bobbio Scriptorium
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Size variations in regular sunspots

โœ Scribed by R. D. Robinson; D. C. Boice


Book ID
104644286
Publisher
Springer
Year
1982
Tongue
English
Weight
372 KB
Volume
81
Category
Article
ISSN
0038-0938

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๐Ÿ“œ SIMILAR VOLUMES


Intensity Variation in Sunspots
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Intensity Variation in Sunspots
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We obtained simultaneous spectra with a spatial resolution of 89 and a temporal resolution of 15 s in Hc~, Can-K, Car1 8542 A, and three FeI lines of the sunspot group responsible for the large flares of August, 1972 (McMath No. 11976). A time series taken 1972, August 3 in the Fe16173 A. Zeeman sen

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โœ Douglas V. Hoyt ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Springer ๐ŸŒ English โš– 798 KB

Sunspot structure is measured by taking the ratio of the area of the umbra to that of the penumbra. The time dependence of this umbral/penumbral ratio is remarkably similar to the record of the Northern Hemisphere surface temperature anomalies. On a year-to-year basis the correlation is 0.57~ which