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Fig. 2


Time evolution of scaling exponent ζ(p) of the pth order VSF. Panels a–d: the measurements for M3 (left), M4 (middle), and M8 (right), respectively. Of these, panel a represents the standard analysis while the other rows illustrate the results of different variations in the analysis as noted in the figures. Panel e: the values of ζ measured within M3 as a function of the Jeans refinement level the cloud has been modelled with. We note that these more expensive runs were not run for as long as the fiducial run. In all panels, the grey dotted vertical lines mark the times than a SN explodes within 100 pc of the cloud, while the blue areas indicate periods of enhanced mass accretion onto the clouds. The coloured horizontal lines show the predicted values for incompressible turbulence (dash-dotted lines; She & Lévêque 1994) and for highly compressible, supersonic turbulence (dashed lines; Boldyrev 2002).

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