開主選單

地理極點行星衛星或其它較大天體嘅自轉軸同佢表面交會嘅點。例如地球上嘅北極南極,其它天體嘅極亦稱為南極同北極,分別會喺個天體赤道兩側各90之處。[1]每個行星都有地理極點。[2]

天體自轉嘅攝動意味地理極點會喺佢表面上稍為徘迴。例如,地球嘅南北極喺幾年內會郁幾米。[3][4]製圖需要精確同不變嘅座標,[未記出處或冇根據]地理極點嘅平均位置作為固定嘅製圖桿,成為物體大圓經度嘅交會點。

如果,好似地球,一個天體產生磁場,就會有磁極[5]

參考

  1. Kotlyakov, Vladimir; Komarova, Anna (2006). Elsevier's Dictionary of Geography: in English, Russian, French, Spanish and German. 第 557頁. 喺22 June 2015搵到. 
  2. Hooper, William (2008). Aether and Gravitation. 第 224頁. 喺22 June 2015搵到. 
  3. Schar, Ray (2010). Wonderfully Weird World. 第 106頁. 喺22 June 2015搵到. 
  4. Lovett, Richard A. (2013-05-14). "Climate Change Has Shifted the Locations of Earth's North and South Poles". Scientificamerican.com. 喺2015-06-26搵到. 
  5. "20 Things You Didn't Know About... the North Pole". DiscoverMagazine.com. 2014-11-18. 喺2015-06-26搵到. 

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