The last geomagnetic reversal for Earth was about780,000 years ago. 地球上最后一次地磁倒转大约是78万年前。
The chaos is caused when the geomagnetic poles of the Earth drop to zero. 当地球磁极降到零点时候引起混乱。
This method does not need reduce processing for geomagnetic observation data. 该方法不需对磁测数据进行通化处理。
A geomagnetic storm is sweeping over the Earth and may interfere with satellite, radio and telephone communications, the National Oceanic and Atmospheric Administration reported Friday.
"Major to severe" geomagnetic storms can block some radio and navigation communications between aircraft and ground stations, and can interfere with some long distance telephone service by generating an electrical charge along cables.
"Based on that, I'm not expecting as large of a geomagnetic disturbance." Mild proton radiation associated with the solar flare had been expected to reach orbiting spacecraft Saturday.
Sunspots themselves do not affect the Earth, but are used as indicators of other solar activity which does, such as solar flares and geomagnetic storms, bombarding the Earth with radiation.
The National Oceanic and Atmospheric Administration reported Friday a geomagnetic storm sweeping over the Earth may interfere with satellite, radio and telephone communications.