Figure 3. Growth of the finger generation zone (h) defined
by the distance encompassed by 61 standard deviation of the
horizontally averaged c/c0 field. Also shown are t1/ 2 curves to
show that transport agrees with diffusive behavior for the Rr 5
2.8 experiment but is slightly faster for the Rr 5 2.4 experiment.
For the Rr 5 1.4 and 1.8 experiments, measurement of
Figure 4. Growth of finger widths showing that merging,
branching, and dissipation act collectively to produce a coherent
scale change. The most stable experiments have the widest
fingers. The solid t1/ 2 curve shows that, in general, fingers
widen as t1/ 2.