On the solar energetic events, neural networks and forecasts of geomagnetic activity

0342369 - GFÚ 2011 RIV BG eng C - Konferenční příspěvek (zahraniční konf.)
Hejda, Pavel - Bochníček, Josef - Valach, F. - Revallo, M.
On the solar energetic events, neural networks and forecasts of geomagnetic activity.
SGEM 2009: 9TH International multidisciplinary scientific geoconference, vol 1, Conference proceedings - Modern management of mine producing, geology and environmental protection. Sofia: International Scientific Conference SGEM, 2009, s. 685-692. ISBN 978-954-91818-1-4.
[International multidisciplinary scientific geo-conference and expo /9./. Albena (BG), 14.06.2009-19.06.2009]
Grant CEP: GA AV ČR(CZ) IAA300120608; GA MŠMT OC09070
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: solar energetic events * geomagnetic activity * artificial neural network
Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie

The causes of geomagnetic disturbances are either high velocity streams of solar wind originating in coronal holes or coronal mass ejections related to solar energetic events. In this presentation we will concentrate on the second case. Data concerning solar energetic events, published by the USAF/NOAA in the form of daily reports, have been collected since 1996. An analysis of ten years long data collection has shown that the degree of the geoeffectiveness of energetic events depends not only on their size and on their solar disc location but also on the fact whether the events are associated with type II and IV radio bursts.
Trvalý link: http://hdl.handle.net/11104/0185120