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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Solar cycle 12 ： ウィキペディア英語版 Solar cycle 12 Solar cycle 12 was the twelfth solar cycle since 1755, when extensive recording of solar sunspot activity began.〔Kane, R.P. (2002). "(Some Implications Using the Group Sunspot Number Reconstruction )". ''Solar Physics'' 205(2), 383-401.〕〔(【引用サイトリンク】 url=http://www.spacetoday.org/SolSys/Sun/Sunspots.html )〕 The solar cycle lasted 11.3 years, beginning in December 1878 and ending in March 1890. The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 74.6 (December 1883), and the minimum was 5.〔SIDC Monthly Smoothed Sunspot Number. "()"〕 There were a total of approximately 736 days with no sunspots during this cycle.〔Spotless Days. "()"〕〔What's Wrong with the Sun? (Nothing) more information: Spotless Days. "()"〕〔Solaemon's Spotless Days Page. "()"〕 A very bright blood-red aurora display happened over New York on 16 April 1882, while significant communication disturbances occurred.〔http://www.solarstorms.org/SRefStorms.html〕 A geomagnetic storm later in that year produced the aurora of November 17, 1882. ==See also== *List of solar cycles *Solar variation 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Solar cycle 12」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.