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Session 92 -- Solar Active Regions and Solar Wind

Oral presentation, Wednesday, 11, 1995, 10:00am - 11:30am

[92.03] Fractal Techniques Applied to a Flaring Active Region

Fractal techniques have been used extensively to characterize data from the fields of atmospheric physics, geophysics, astrophysics, and recently to identify fractal clusters in sunspot penumbrae and solar active regions. Using data acquired with NASA/Marshall Space Flight Center's vector magnetograph, we apply fractal techniques to identify temporal changes of the Hurst coefficient by applying Hurst's modified ``Range over Standard Deviation" analysis to 30 sets of data taken at five minute intervals. These data were obtained over a period of three hours, during which time one of two M-class flares occured. To determine the correlation with solar flares, we compare the evolution of Hurst coefficients from this active region (NOAA AR 6659) June 10, 1991 to a simple, non-flaring sunspot (NOAA AR 6484).

Wednesday program listing