%0 Journal Article %T Fractal Characteristics of the Auroral Oval Structure According to the All-Sky Camera Data in Apatity for 2013–2020 %A Kozelov, B.V. %K aurora, substorm, particle precipitation, high-latitude ionosphere, scaling, fractal index, anisotropy, pulsating auroras, expansion phase %J Russian Journal of Earth Sciences %D 2025 %N 25 %P 10 %I Geophysical Center of the Russian Academy of Sciences