磯場の微地形の定量的評価の試み

抄録

Recently, the coasts which has environmental and biological effects, such as a sandy beach, tidal flat and rocky coast, have been drawing attentions in the field of coastal and environmental engineering. Accordingly, theplacement of artificial materials in an inorganic coast has been tried to enhance the worth of the coast in the environmental and biological aspects.
As for artificial rocky coasts, which can be placed near a seawall or breakwater, most of them are superficial imitations of the nature. Because the micro-topography of a natural rocky coast is not taken into account in their designs, their biological effects are only a little.
In this research, we investigated the micro-topography of natural rocky coasts, and tried to estimate their effects on marine organism. As a result, we clarified the effects of horizontal depressions, represented by a visor and notch.