sunspot cycle 中文意思是什麼
sunspot cycle
解釋
日斑周期-
Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented
許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型 -
During this long period, the number of sunspots on the sun got very low. the 11 - year sunspot cycle essentially disappeared. this sunspot deficient period is called the " maunder minimum "
那段期間，太陽黑子數目非常低，太陽黑子約十一年的周期可說消失無蹤，我們稱這段幾乎沒有黑子的時期為蒙德爾極小期。 -
The recent increase in sunspot number offers a hint of the coming solar maximum of its 11 - year cycle
近期太陽黑子的數目正在不斷增加，對即將發生的11年周期太陽最活躍期發出一個啟示。 -
" on january 4, 2008, a reversed - polarity sunspot appeared ? and this signals the start of solar cycle 24, " says david hathaway of the marshall space flight center
太陽黑子循環24已於2008年1月開始，但是太陽周期23尚未結束。兩個周期一段時間將共存，在未來幾個月也許同時會看到老周期黑點和新周期黑點。 -
Several explanations have been proposed, including cycles of magnetic activity somewhat similar to our own sun ' s sunspot cycle, the action of companion stars orbiting around the dying star, and stellar pulsations
現在有幾個被提出的解釋，包括像我們自己的太陽黑子周期的磁場周期活動，圍繞衰老的恆星軌道有規律運動的伴星。 -
A solar cycle also called a sunspot cycle is an approximately 11 - year period with increasing and decreasing sunspot numbers
太陽周期是指大約十一年周期性的太陽黑子數量增加和減少。 -
A solar cycle ( also called a sunspot cycle ) is an approximately 11 - year period with increasing and decreasing sunspot numbers
太陽周期是指大約十一年周期性的太陽黑子數量增加和減少。 -
Accurately predicting the intensity of the sunspot cycle, which occurs about every 11 years, allows scientists to anticipate solar storms
太陽黑子的活動是周期性的，其平均周期約為11年。精確預測太陽活動周期的強度可以讓科學家們提前預知太陽風暴。 -
The next sunspot cycle will be between 30 percent to 50 percent more intense than the last one, scientists said monday
據美聯社3月6日報道，美國科學家6日表示，下一個太陽活動周期與上一個太陽活動周期相比，其強度將增加30至50 。
分享友人