Tidal Bores, Aegir, Eagre, Mascaret, Pororoca: Theory And Observations

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World Scientific, 16 sept. 2011 - 220 pages
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A tidal bore is a series of waves propagating upstream as the tidal flow turns to rising. It forms during spring tide conditions when the tidal range exceeds 4 to 6 m and the flood tide is confined to a narrow funnelled estuary. Its existence is based upon a fragile hydrodynamic balance between the tidal amplitude, the freshwater river flow conditions and the river channel bathymetry, and it is shown that this balance may be easily disturbed by changes in boundary conditions and freshwater inflow. This book demystifies the physics of a tidal bore and it thoroughly documents the tidal bores on our planet with reliable and accurate information. It aims to cultivate a passion for a beautiful, but fragile geophysical process, with in-depth updated content and by over 190 illustrations and photographs.
 

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Table des matières

1 Introduction
1
2 Basic Theory
9
3 Observations
37
4 The Rumble Noise of Tidal Bores
95
5 Turbulence and Mixing in Tidal Bores
105
6 Interactions Between the Tidal Bore Environment and Mankind
125
7 Conclusion
151
Appendix A Incomplete List of TidalBore Affected Rivers and Estuaries
155
Appendix B Undular Wave Theory
159
Appendix C Tales of a Surfer
161
Appendix D Glossary and Tidal Bore Vocabulary
173
References
183
Author Index
197
Subject Index
199
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