Tidal Hydrodynamics

Consists of refereed papers by the world's leading authorities on tidal hydrodynamics. Its forty-four papers, including nine review papers, cover all aspects of the subject and present, for the first time in one place, state of the art treatments of recent advances including tidal detection from satellite altimetry, global tide modeling, nonlinear tidal interactions and internal tidal phenomena.

Using field observations and simple models, this book describes the latest developments in the hydrodynamics and morphodynamics of tidal inlets.

V monografiji je opisan postopek za hidrodinamično modeliranje plimskih elektrarn. V luči podnebnih sprememb bodo imele plimske elektrarne pomembno vlogo pri prehodu na obnovljive vire energije in razogljičenje družbe. Plimovanje namreč ni odvisno od vremenskih razmer in je popolnoma predvidljivo, z možnostjo natančnih napovedi več let v prihodnost. Glavna pomanjkljivost plimskih elektrarn je njihova omejenost na območja z intenzivnim plimovanjem, kot so atlantske obale Združenega Kraljestva, Francije in Kanade ter druge oceanske obale po svetu. Vloga hidrodinamičnih modelov pri načrtovanju hidroelektrarn je predvsem v razumevanje okolijskih vplivov in optimizaciji delovanja same elektrarne. Tematsko je knjiga razdeljena v tri sklope. Prvi nudi širši vpogled v ozadje plimskih elektrarn ter preuči že objavljeno strokovno literaturo. V drugem sledi podroben opis teoretičnih osnov ter sama metodologija za numerično modeliranje z uporabo odprtokodne programske opreme Delft3D. Zadnji sklop zajemata študiji primera na katerih je bila metodologija preizkušena, ki obravnavata hidrodinamične vplive dveh predlaganih plimskih elektrarn v Združenem Kraljestvu in sicer pregrado preko estuarija reke Severn in umetno laguno v zalivu Swansea.

Along much of the shoreline of the world, tidal inlets play an important role in nearshore processes, providing links between the coastal oceans and protected embayments. Their study is of particular importance not only for the understanding of fundamental processes in coastal oceanography but also for engineering and the proper management of the delicate equilibrium of our shorelines. This volume, based on the International Symposium on Hydrodynamics and Sediment Dynamics of Tidal Inlets held at Woods Hole, MA, presents the reader with an overview of contemporary research on these important features. The coverage includes: - mathematical modelling, including a review of inlet hydrodynamics, - observations on hydrodynamics, - sedimentology and morphology, - tidal deltas, - processes and policies pertaining to sedimentation, and the - impacts of shore protection and dredging in beaches.

The purpose of this study was to provide an understanding of the interrelationships between fresh and salt water Circulation, tidal transport and flushing patterns in the Chetco River estuary and its boat basins. Field work and water quality measurements were conducted at the entrance of the Chetco River during 1975 and 1976. These results were used for classifying the estuary and for developing and verifying both numerical and physical models. A one-dimensional numerical model was successfully used to simulate the tide and currents cf the Chetco River. The model was calibrated Prior to the recent (1976) port expansion and was used to predict the expected changes in tidal response due to the enlargement of the tidal basin. Subsequently, analytical and physical models were applied to predict the flushing ability of the new boat basin. Attempts were made to use a two-dimensional finite element numerical model for calculating currents and simulating the circulation in the boat basins. Results were compared with those taken during seasonal field studies. Analytical models were found to be economical and effective for estimating the flushing rate in small marinas, when applied with caution. Application of numerical models to small basins seems somewhat impractical because of grid size detail and computational costs. When studying the flushing characteristics of proposed marinas, a reduced-scale physical model is considered to be a most effective tool. For prototype considerations, field studies can be most instructive in providing information for decisions regarding the flushing characteristics of marinas. The study results show that the Port of Brookings marina flushing ranges from four to eight tidal cycles (two to four days). The new marina flushing rate depends on the range of tide and the strength of the ambient river currents. Water quality studies indicated that the Chetco River area has satisfactory water quality throughout all seasons; the only possible exception being when continuous dry summer months might occur along with high recreational use of the marina.