ripple index

ripple index

[′rip·əl ‚in‚deks]
(geology)
On a rippled surface, the ratio of the crest-to-crest distance to the crest-to-trough distance.
References in periodicals archive ?
Ripple Index (Rl) < 4 (wave generated) and RI > 15 (current generated).
Ripple index (RI), ripple symmetry index (RSI), and parallelism index (PI) are calculated for the HFM (Table 1).