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Fig. 5. Wetted structure development and a fluid cascade. The color images represent the development of the wetting pattern in Fracture V3 during Test 6. Individual colors represent the sequence of development at the indicated time. Water was retained at the fracture intersection of V3 and H2 between 413 and 1421 s (1008 s). At 1447 s a fluid cascade was observed that traveled 32 cm in 26 s. Graph shows the advance of the tip of the wetted area in Fracture V3 vs. elapsed time in seconds; the fluid cascade can be seen as a large step at 1421 s.
