The earth ' s rotation , through the coriolis effect , deflects rising fluids inside the earth ' s core the same way it twists ocean currents and tropical storms into the familiar spirals we see in weather satellite images 地球自转造成科氏力效应，会使地核内上升的流体偏向，就像造成洋流及热带风暴被扭转成在气象卫星影像中常见的漩涡状那样。
