Properties of the large- and small-scale flow patterns in and around AR 19824

Details Properties of the large- and small-scale flow patterns in and around AR 19824 Properties of the large- and small-scale flow patterns in and around AR 19824

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..129...95s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 129, Sept. 1990, p. 95-112.

Physics

54

Magnetic Flux, Magnetic Signatures, Photosphere, Solar Atmosphere, Solar Granulation, Solar Rotation, Flow Distribution, Flow Velocity, Solar Observatories

Scientific paper

A series of magnetograms spanning just over 5 days and covering about 4 x 5 arcmin has been used to trace the photospheric motions of 170 concentrations of magnetic flux tubes in and around the decaying active region 19824. A persistent large-scale flow pattern superposed on small-scale random motions of both polarities is noted whose overall pattern resembles the flow of a river around a sand bar, and whose long-term evolution suggests a persistence of several months. The observed motions of concentrations of flux tubes are corrected for the large-scale flow in order to study their random motions.

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