Abstract Storm Sudden Commencements (SSCs) are sharp offsets in the global geomagnetic field H component which accompany some geomagnetic storms. SSC signatures, which are a strong function of geographic location and local time, are usually explained as the result of magnetospheric and ionospheric responses to a compression caused by propagating discontinuities in the solar wind. The Space Environment Services Center (SESC) in Boulder, Colorado, has recently instituted an SSC ‘alarm’ to alert both forecasters and customers of potential geomagnetic storm conditions. The present software design looks for rapid change, coincidental within one minute, in the H-components among any two of the three magnetometers received in real-time at the SESC. These are the Boulder magnetometer, and the magnetometers on board the GOES geosynchronous satellites located at 75° and 135° West Longitude. The results are not yet satisfactory and offer some clues toward a better understanding of the physics of SSCs.


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    Title :

    The automatic detection of geomagnetic-storm sudden commencements


    Contributors:

    Published in:

    Publication date :

    1985-01-01


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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