Open AccessTIME SCALE FOR MODELING BEACH CHANGE
Author(s) -
Masahiro Ito,
Yoshito Tsuchiya
Publication year - 1986
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.v20.88
Subject(s) - scale (ratio) , scale model , range (aeronautics) , geology , similarity (geometry) , sediment transport , scale effects , shore , series (stratigraphy) , mathematics , geotechnical engineering , meteorology , sediment , computer science , geomorphology , engineering , geography , oceanography , cartography , paleontology , aerospace engineering , artificial intelligence , image (mathematics)
A time scale in the similarity of beach change between model and prototype in transitional beach processes from an initial even slope to an equilibrium is developed using a series of small- and large-scale experiments in which the experimental conditions were set up with the scale-model relationship by the authors (1984). The time scale is obtained empirically as a function of experimental scale. Applied the proposed time scale and the scale-model relationship to model experiments, similarity of morphological beach change such as shoreline change and relative breaker point was well reproduced within the allowable range of experimental error. A semi-theoretical time scale is obtained from the continuity equation, the sediment transport rate, and the scale-model relationship of equilibrium beach profile in two-dimensional beach change. The relation between experimental and semi-theoretical time scale is discussed.