It is associated with ridging, or anticyclonic flow. Transverse ridging and deformations close to the nail base appeared on her fingernails. On August 23, the system turned westward due to increased ridging to its north. The design prevents sagging, soft spots and ridging. In addition to ridging, surface scattering from smaller-scale roughness must also be considered. The dermal surface of the armor has a unique pattern of crowded ridging. Blossoms will cause fruit drop and injury, such as ridging on developing and mature fruit. "I. valliceps" has the most extensive ridging of any toad in its geographic range. Ridging is often used to reduce tuber contamination by blight. Ridging occurs when that ice bends or slides at the ridges.