| rdfs:comment
| - A geomagnetic storm is "a temporary disturbance of the Earth's magnetic field resulting from solar activity."
- A Geomagnetic storm can occur once a sun reaches a point when it releases a Coronal mass ejection to affect a planet's geomagnetic field. (SG1: "Window of Opportunity")
- From August 28th until September 2nd, 1859, numerous sunspots and solar flares were observed on the sun, the largest flare occurring on the 1st. A massive CME headed directly at Earth due to the solar flare and made it within eighteen hours—-a trip that normally takes three to four days. On September 1st and 2nd, the largest recorded geomagnetic storm occurred. Telegraph wires in both the United States and Europe shorted out, some even causing fires. Auroras were seen as far south as Hawaii, Mexico, Cuba, and Italy—phenomena that are usually only seen near the poles. This was the 1859 solar superstorm.
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| abstract
| - From August 28th until September 2nd, 1859, numerous sunspots and solar flares were observed on the sun, the largest flare occurring on the 1st. A massive CME headed directly at Earth due to the solar flare and made it within eighteen hours—-a trip that normally takes three to four days. On September 1st and 2nd, the largest recorded geomagnetic storm occurred. Telegraph wires in both the United States and Europe shorted out, some even causing fires. Auroras were seen as far south as Hawaii, Mexico, Cuba, and Italy—phenomena that are usually only seen near the poles. This was the 1859 solar superstorm. On 13 March, 1989 a severe geomagnetic storm caused the collapse of the Hydro-Québec power grid in a matter of seconds as equipment protection relays tripped in a cascading sequence of events . Six million people were left without power for nine hours, with significant economic loss. The storm even caused auroras as far south as Texas . The geomagnetic storm causing this event was itself the result of a Coronal Mass Ejection, ejected from the Sun on March 9, 1989. In August 1989, another storm affected microchips, leading to a halt of all trading on Toronto's stock market . Since 1989, power companies in North America, the UK, Northern Europe and elsewhere evaluated the risks of geomagnetically induced currents (GIC) and developed mitigation strategies. See also: Error: Template must be given at least one article name Since 1995, geomagnetic storms and solar flares have been monitored from the Solar and Heliospheric Observatory (SOHO) joint-NASA-European Space Agency satellite.
- A geomagnetic storm is "a temporary disturbance of the Earth's magnetic field resulting from solar activity."
- A Geomagnetic storm can occur once a sun reaches a point when it releases a Coronal mass ejection to affect a planet's geomagnetic field. (SG1: "Window of Opportunity")
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![[RDF Data]](/fct/images/sw-rdf-blue.png)