Photographic Observations of Tidal Bores (Mascarets) in France

Chanson, Hubert (2008) Photographic Observations of Tidal Bores (Mascarets) in France. Hydraulic Model Report Series CH CH71/08, Civil Engineering, The University of Queensland.

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Author Chanson, Hubert
Title Photographic Observations of Tidal Bores (Mascarets) in France
School, Department or Centre Civil Engineering
Institution The University of Queensland
Report Number CH71/08
Series Hydraulic Model Report Series CH
Publication date 2008
Start page 1
End page 104
Total pages 104
Publisher Division of Civil Engineering at the University of Queensland
Editor Hubert Chanson
Language eng
Subject 290000 Engineering and Technology
290800 Civil Engineering
290802 Water and Sanitary Engineering
291200 Maritime Engineering
291205 Ocean Engineering
291800 Interdisciplinary Engineering
291803 Turbulent Flows
291899 Interdisciplinary Engineering not elsewhere classified
299900 Other Engineering and Technology
299999 Engineering and Technology not elsewhere classified
350000 Commerce, Management, Tourism and Services
350500 Tourism
350503 Impacts of Tourism
Abstract/Summary 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. The existence is based upon a fragile hydrodynamic balance between the tidal amplitude (marnage), 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. Although the Seine River no longer has its tidal bore, more than of dozen of estuaries are affected by tidal bores in France alone. Herein the writer aims to share his enthusiasm and passion for tidal bores by documenting several tidal bores in France with photographic observations. More than 65 photographs are presented and documented. This technical report is supported by a digital appendix (Appendix B) containing a slide show movie and two sound records available at the University of Queensland institutional open access repository UQeSpace {http://espace.library.uq.edu.au/}. A glossary of technical terms is available after the list of symbols. / Un mascaret est une onde positive de translation, appelée aussi onde de compression ou ressaut en translation, qui se développe avec la marée montante, durant une grande marée, dans un estuaire. Un mascaret peut se produire dans une rivière, quand l’embouchure a un fond plat, et une forme convergente, et le marnage est supérieure à 4 à 6 m. Visuellement, il s’agit d’une onde, ou d’une série d’ondes, se propageant vers l’amont, et c'est une discontinuité de la surface libre, avec un accroissement brutal de la hauteur d’eau. En France, plus d'une douzaine d'estuaires sont sujets à un phénomène de mascaret. Dans ce rapport technique, l'auteur souhaite partager sa passion et son intérêt pour le phénomène du mascaret, en illustrant des mascarets en France avec plus de 65 photographes. Le rapport est complémenté par un appendice digital (App. B), contenant un film de diapositives et des fichiers sons, qui sont disponibles dans le repositoire d'accès gratuit de l'University of Queensland, UQeSpace {http://espace.library.uq.edu.au/}. De plus, un glossaire de termes techniques est fourni après la notation.
Keyword Tidal bores
Mascarets
Aegir
Pororoca
France
Dordogne
Garonne
Isle
Baie du Mont Saint Michel
Selune
See
Couesnon
Fremur
Arguenon
Aquitaine
Bretagne
Normandie
Photographs
Additional Notes The full bibliographic details are : CHANSON, H. (2008). "Photographic Observations of Tidal Bores (Mascarets) in France." Hydraulic Model Report No. CH71/08, Div. of Civil Engineering, The University of Queensland, Brisbane, Australia, 104 pages, 1 movie and 2 audio files (ISBN 9781864999303). The deposity includes a movie file and two audio track files that are deposited with the digital record of the publication at the institutional open access repository of the University of Queensland: {http://espace.library.uq.edu.au/}. The copyrights of the movie, all photographs and the audio recordings are the sole property of Hubert CHANSON. Any use of the movie, photographs and audio files available in the digital appendix must acknowledge and cite the present report. Lastly the research report was published as part of the Hydraulic Model research report series CH that is a refereed publication published by the Division of Civil Engineering at the University of Queensland, Brisbane, Australia.

Document type: Department Technical Report
Collection: School of Civil Engineering Publications
 
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Created: Mon, 27 Oct 2008, 18:56:52 EST by Hubert Chanson on behalf of School of Civil Engineering