Paper Title:
Diagnostics of flare activity level from turbulence parameters of
photospheric plasma

Author List:
Abramenko, V.I.

Abstract:

    We continue our research on the diagnosis of the level of flare
    activity in different active regions by means of structure
    functions (parameters of the turbulence state). In this study
    we used measurements of the photospheric magnetic and velocity
    fields obtained before the flare onset. The study shows that
    the state of turbulence in an active region varies in accordance to
    the level of its flare productivity. For example, a "quiet" active
    region has classical Kolmogorov turbulence, while active
    regions which produce strong flares display significant
    deviations from classical Kolmogorov turbulence. We discuss
    the observed phenomenon in terms of complexity of photospheric
    structures.