There are three ill-defined grey-whitish dots beneath the posterior half of the costal streak, almost confluent with it and there is a grey whitish submarginal line, becoming marginal on the lower half of the hindmargin and with the anterior edge waved.
22.
The problem with the standing edge wave theory is that it would only account for the initial formation of the cusp and not their continued growth afterwards because as the cusp increases in size the amplitude of the edge wave decreases to the point where it is no longer a factor.
23.
The problem with the standing edge wave theory is that it would only account for the initial formation of the cusp and not their continued growth afterwards because as the cusp increases in size the amplitude of the edge wave decreases to the point where it is no longer a factor.
24.
These analyses, using more data than previous attempts, confirm that there is a possible link between cusp development and both edge waves and swash-sediment feedback, and that it is not possible to produce conclusive support for one theory above the other with the simple measurements that have been made previously.
25.
There is a very broad blackish-fuscous fascia from three-fourths of the costa to the tornus, much narrowed on the costa, the anterior edge convex-prominent in the middle and towards the costa, the posterior edge waved convex, leaving only a narrow white streak around the apical edge.
26.
Using the assumption that the cross-shore velocity " v " is zero at the coast, " v " = 0, one may solve a frequency relation for the phase speed of coastal Kelvin waves, which are among the class of waves called boundary waves, edge waves, trapped waves, or surface waves ( similar to the Lamb waves ).
