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Solar cycle 14 : ウィキペディア英語版 | Solar cycle 14
Solar cycle 14 was the fourteenth 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 11.5 years, beginning in February 1902 and ending in August 1913. The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 64.2, in February 1906 (the lowest since the Dalton Minimum), and the minimum was 1.5.〔SIDC Monthly Smoothed Sunspot Number. "()"〕 There were a total of approximately 1019 days with no sunspots during this cycle (the second highest recorded of any cycle to date).〔Spotless Days. "()"〕〔What's Wrong with the Sun? (Nothing) more information: Spotless Days. "()"〕〔Solaemon's Spotless Days Page. "()"〕 Geomagnetic storms in November 1903, March 1905, and September 1909 affected telegraph lines.〔http://www.solarstorms.org/SRefStorms.html〕 ==See also==
*Solar variation *List of solar cycles
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 14」の詳細全文を読む
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