Structure properties of supergranulation and granulation

F. Berrilli, D. Del Moro, G. Consolini, E. Pietropaolo, T. L. Duvall, A. G. Kosovichev

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

We investigate spatial dislocation ordering of the solar structures associated with super-granulation and granulation scales. The supergranular and granular structures are automatically segmented from time-distance divergence maps and from broad-band images, respectively. The spatial dislocation ordering analysis is accomplished by applying the statistical method of Pair Correlation Function, g2(r), to segmented features in the solar fields. We compare the computed g2(r) functions obtained from both single and persistent, i.e., time-averaged, fields associated with supergranulation and granulation. We conclude that supergranulation and granulation patterns present a different topological order both in single and persistent fields. The analysis carried out on single fields suggests that the granulation behaves as an essentially random distribution of soft plasma features with a very broad distribution in size, while supergranulation behaves as a random distribution of close packed, coherent stiff features with a rather defined mean size.

Original languageEnglish (US)
Pages (from-to)33-45
Number of pages13
JournalSolar Physics
Volume221
Issue number1
DOIs
StatePublished - May 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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