What causes the periodic reversals of the earth's magnetic field? Have there been any successful attempts to model the phenomenon? http://www.scientificamerican.com/article.cfm?id=what-causes-the-periodic 太陽的磁極每11 年reverse 反轉..地球則不一定,有時 1萬年就反轉一次,有時2500萬年反轉一次. Satellites Spy Changes to Earth's Magnetic Field By Sarah Graham
April 11, 2002 http://www.scientificamerican.com/article.cfm?id=satellites-spy-changes-to 地球的磁場是來自內部的2200公里厚的液態鐵的流動.這組科學家利用衛星資料,已發現的確有磁極反轉的”早期跡象”……..這是2002 的消息…..不知現在如何 Headed South? http://www.scientificamerican.com/article.cfm?id=headed-south-2003-03-31 但歷史上地球磁場已反轉好幾百次,確無證據顯示會和生物滅絕有關 Earth's Core, Magnetic Field Changing Fast, Study Says Kimberly Johnson
for National Geographic News June 30, 2008 http://news.nationalgeographic.com/news/2008/06/080630-earth-core.html 新證據顯示地球某些地方的磁場在變弱,且快速變化….可能會有瞬間的反轉… The earth's magnetic field impacts climate: Danish study by Staff Writers
Copenhagen (AFP) Jan 12, 2009
http://www.terradaily.com/reports/The_earths_magnetic_field_impacts_climate_Danish_study_999.html 地球的氣候會被地球磁場很顯著的影響 Russians order Flight Changes, after Massive Magnetic Shift downs Airliners... Tuesday, 30 June 2009 http://macedoniaonline.eu/content/view/7331/53/ 在地球磁場大轉移下, 俄羅斯變更航班 原因是有
磁極風爆geomagnetic storms其來源是從非洲版塊延伸出來, 其強度已造成倆架飛機墜毀 300多人死亡 |