Počet záznamů: 1
Variations in solar and geomagnetic activity with periods near to 1.3 year
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SYSNO ASEP 0330243 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Variations in solar and geomagnetic activity with periods near to 1.3 year Tvůrce(i) Střeštík, Jaroslav (GFU-E) RID Zdroj.dok. Central European Journal of Geosciences - ISSN 2081-9900
Roč. 1, č. 2 (2009), s. 152-156Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova transyear variation ; geomagnetic activity ; solar activity ; wavelet analysis Vědní obor RIV DE - Zemský magnetismus, geodézie, geografie CEP IAA300120608 GA AV ČR - Akademie věd CEZ AV0Z30120515 - GFU-E (2005-2011) UT WOS 000208419900002 EID SCOPUS 67651043275 DOI 10.2478/v10085-009-0010-y Anotace It is known that solar wind velocity fluctuates regularly with a period of about 1.3 years. This periodicity (and other signals with periods near to 1.1 and 0.9 years) has also been observed in biological data. The variation is a temporary feature, mostly being observed in the early 1990s. Here, the occurrence of these periodic signals in solar and geomagnetic activity between 1932 and 2005 has been investigated. The signal with 1.3 year period is present in geomagnetic activity only in a short interval after 1990 and to a lesser extent around 1942. At other times the signal is very weak or not present at all. Other periods are much lower amplitude and appear only sporadically throughout the time investigated. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2010
Počet záznamů: 1