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GICs can affect the normal operation of long electrical conductor systems such as electric transmission grids and buried pipelines. The geomagnetic disturbances which induce GICs include geomagnetic storms and substorms where the most severe disturbances occur at high geomagnetic latitudes.
A geomagnetic storm, also known as a magnetic storm, is a temporary disturbance of the Earth's magnetosphere caused by a solar wind shock wave. The disturbance that drives the magnetic storm may be a solar coronal mass ejection (CME) or (much less severely) a corotating interaction region (CIR), a high-speed stream of solar wind originating ...
Geomagnetic storms can also add energy to currents in Earth's magnetic field that can increase distribution of density in the upper atmosphere and cause extra drag on low-orbiting satellites.
Such observatories can measure and forecast magnetic conditions such as magnetic storms that sometimes affect communications, electric power, and other human activities. The International Real-time Magnetic Observatory Network , with over 100 interlinked geomagnetic observatories around the world, has been recording the Earth's magnetic field ...
Geomagnetic storms can have an impact on infrastructure in near-Earth orbit and on Earth’s surface, potentially disrupting communications, the electric power grid, navigation, radio and ...
Programming note: Tune in to CNN NewsNight: Solar Storm, hosted by Abby Phillip and Bill Weir, tonight from 10 p.m. to 12 a.m. ET. For the latest on the massive solar storm, head over to CNN’s ...
January 1938 geomagnetic storm, or the Fátima storm Mar 1940 March 1940 superstorm Triggered by an X35±1 solar flare. [53] Caused significant interference to United States communication systems. [54] Sep 1941 [55] Mar 1946 Geomagnetic storm of March 1946 Est. Dst m of −512 nT [56] [57] Feb 1956 [58] [59] [60] Sep 1957 Geomagnetic storm of ...
The 2003 Halloween solar storms had a peak Dst index of −383 nT, although a second storm on 20 November 2003 reached −422 nT while not reaching G5-class. [16] [17] The March 1989 geomagnetic storm had a peak Dst index of −589 nT, [18] while the May 1921 geomagnetic storm has been estimated to have had a peak Dst index of −907 ± 132 nT.