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Value‐added maps: fluid‐dynamics descriptors from ring diagrams
Author(s) -
Komm R. W.
Publication year - 2007
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200610729
Subject(s) - helicity , vorticity , diagram , physics , fluid dynamics , kinetic energy , flow (mathematics) , scale (ratio) , geophysical fluid dynamics , potential vorticity , focus (optics) , ring (chemistry) , mechanics , statistical physics , geometry , geology , classical mechanics , mathematics , vortex , optics , chemistry , statistics , organic chemistry , particle physics , quantum mechanics
We describe fluid‐dynamics descriptors derived from maps of the horizontal flow components measured with ring‐diagram analysis. Here, we focus on quantities, such as vorticity and kinetic helicity density, and discuss three examples of results derived from them: subsurface flows associated with active regions, subsurface flows and flare activity, and large‐scale behavior of horizontal flows. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)