以下の英文の和訳をお願いします。
Although the magnitude of the variations of carbon-14 is strongly attenuated through the carbon cycle after being produced by the GCRs in the atmosphere (Siegenthaler and Beer, 1988), carbon-14 in tree-rings preserve the information on the variations in solar cycles and the magnetic dipole polarity of the sun. Therefore, the variability of the “11-year” solar cycle in association with the century-scale variations of solar activity can be monitored to asses its influence on climate.
The lengths of sunspot periods have been modulated by a few years since the 11-year sunspot cycle was firstly found by Schwabe (1843). The maximum range observed so far is ~ 9 to ~ 14 years, but most of the cycles fit in ~ 10–12 years with the overall average being 11 years. However, we have previously found a change in average cycle length during the Maunder Minimum ((Miyahara et al., 2004); see Supplementary Fig. S1). The sunspots were scarce through 1645–1715 AD due to the anomalous weakening of the magnetic activity at this time, yet the carbon-14 abundances show the appearance of significant cyclic changes in magnetic activity. The average length of the cycles through the 70 years was about 14 years with the 28-year period of magnetic polarity reversals. The relationship between the cycle length of the “11-year” variation in sunspots and its magnitude has been investigated in several papers (Clough, 1905, Solanki et al., 2002 and Rogers et al., 2006). A consistent feature is the inverse correlation between cycle amplitudes and cycle lengths that maybe related to the change of the meridional flows inside the convection zone of the sun (Hathaway et al., 2003).
お礼
いつもありがとうございます。 知らない言葉が聞き取れないということを再認識しました。 また、再度聞いたところ動画の最初の方で、この人がtorment という表現をしていましたので、こういうところに注意する必要があると反省いたしました。 当方、サラリーマンを引退した個人投資家として、趣味で海外の情報収集のために金融の英語を独習しております。 今後ともどうぞよろしくお願いいたします。