Open AccessDEPOSITIONAL EFFECTS OF OFFSHORE BREAKWATER DUE TO ONSHORE-OFFSHORE SEDIMENT MOVEMENT
Author(s) -
Hideaki Noda
Publication year - 1984
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v19.135
Subject(s) - submarine pipeline , breakwater , sedimentary depositional environment , geology , sediment , shore , deposition (geology) , deep water , geotechnical engineering , waves and shallow water , geomorphology , oceanography , structural basin
Physical parameters controlling the development of tombolo behind offshore breakwaters are clarified on the basis of the results obtained by laboratory tests. Especially, the depositional effects are evaluated by taking a permeable type structure into account. They are wave characteristics, sediment size, the water depth where the structures are to be placed and its dimension. The amount of sand deposition behind the structures is presented by non-dimensional parameters such as the relative distances from the initial shoreline to the structure and to the breaking point of waves, the ratio of the gap width to the wave length in deep water and the ratio of the length of the offshore breakwater to the wave length in deep water.