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Space-time segmentation method for study of the vertical structure and evolution of solar supergranulation from data provided by local helioseismology
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SYSNO ASEP 0355104 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Space-time segmentation method for study of the vertical structure and evolution of solar supergranulation from data provided by local helioseismology Author(s) Žlebčík, R. (CZ)
Švanda, Michal (ASU-R) RID, ORCID
Klvaňa, Miroslav (ASU-R) RIDSource Title New Astronomy. - : Elsevier - ISSN 1384-1076
Roč. 16, č. 1 (2011), s. 1-5Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords Sun ; photosphere ; helioseismology Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics R&D Projects IAA300030808 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000282116700001 DOI 10.1016/j.newast.2010.06.002 Annotation Most of the papers about supergranulation deal with its surface properties. Local helioseismology provides an opportunity to look below the surface and see the vertical structure of this convective feature. We present a concept of a (3 + 1)-D segmentation algorithm capable of recognising individual supergranules in a sequence of helioseismic 3-D flow maps. As an example, we applied this method to the state-of-the-art data and derived descriptive statistical properties of segmented supergranules – typical size of 20–30 Mm, characteristic lifetime of 18.7 h, and estimated depth of 15–20 Mm. We present preliminary results obtained on the topic of the three-dimensional structure and evolution of supergranulation. The method has great potential in analysing the better data expected from the helioseismic inversions, which are being developed. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2013
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