Open AccessHARBOUR INLETS ON TIDAL ESTUARIES
Author(s) -
Hans Vollmers
Publication year - 1976
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.v15.107
Subject(s) - harbour , eddy , vortex , current (fluid) , inlet , sedimentation , tidal current , estuary , geology , oceanography , river mouth , hydrology (agriculture) , meteorology , physics , geomorphology , geotechnical engineering , turbulence , sediment , computer science , programming language
Two important points should be considered, if a harbour mouth is planned, on a river: 1. The traffic conditions especially the navigation must be considered (i.e. large width of the mouth) 2. The sedimentation should, be small (i.e. small width of the mouth) These conditions are contradictory. Harbour mouths are lateral enlargements. The current doesn't follow these enlargements, a separation sheet forms which is characterized by eddies. A more or less great mass of water is in movement in the enlargement. These rotating movements are called "vortices". One distinguishes "primary vortices", "secondary vortices" etc. depending on the initiating current (Fig. 1).