The dependence of solar flare energetics on flare volumes

The sizes of 45 X-ray flares observed on Skylab have been measured and compared to flare rise times, energies, and energy release rates as determined from Solard and XREA X-ray data. The X-ray rise time is correlated with the length and volume of the flare. The energy of the flare and the rate of increase of that energy are correlated with flare length and volume. Both the energy per unit volume and the rate of energy increase per unit volume are inversely correlated with flare length and volume. There is no correlation between the emission measure and the volume.