Tidal Bores, Aegir, Eagre, Mascaret, Pororoca: Theory And ObservationsWorld Scientific, 16 sept. 2011 - 220 pages 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. |
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 |
| 183 | |
| 197 | |
| 199 | |
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Expressions et termes fréquents
advection Amazon River Antony Colas Araguari River Baie du Mont Bay of Fundy bore Froude number bore roller breaking bore China cnoidal Daly River Dee River Dordogne River Dordogne River tidal equation flood flow flood tide flow conditions flow depth freshwater Garonne River Garonne River tidal Grouin du Sud Hooghly River hydraulic jump initial flow Koch and Chanson left bank mascaret momentum Mont Saint Michel observed Petitcodiac photographs Podensac Pointe du Grouin Pororoca Port de Saint positive surge Qiantang River ride Rio Mearim River Australia River channel River estuary River France river mouth River tidal bore River UK Roche Torin Saint Michel France Saint Pardon Saltney Ferry sediment Sée River Seine River Sélune River September 2008 Severn River Shutter speed spring tides tidal bore front tidal bore process tidal bore propagating tidal range turbulent undular bore undular tidal bore vertical water depth wave crest whelps Wolanski