Mixing and sediment processes induced by tsunamis propagating upriver

Chanson, Hubert and Lubin. Pierre (2013). Mixing and sediment processes induced by tsunamis propagating upriver. In Tianxing Cai (Ed.), Tsunamis: Economic Impact, Disaster Management and Future Challenges (pp. 65-102) Hauppauge, NY, USA: Nova Science Publishers.

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Author Chanson, Hubert
Lubin. Pierre
Title of chapter Mixing and sediment processes induced by tsunamis propagating upriver
Title of book Tsunamis: Economic Impact, Disaster Management and Future Challenges
Place of Publication Hauppauge, NY, USA
Publisher Nova Science Publishers
Publication Year 2013
Sub-type Chapter in reference work, encyclopaedia, manual or handbook
Series Natural Disaster Research, Prediction and Mitigation
ISBN 9781628086829
9781628086867
Editor Tianxing Cai
Chapter number 3
Start page 65
End page 102
Total pages 38
Total chapters 5
Language eng
Formatted Abstract/Summary
The 26 December 2004 and 10 March 2011 tsunami disasters highlighted the rapid advance of the tsunami waters following rivers and canals causing massive damage deep inland. The leading edge of the tsunami formed a series of waves propagating upriver. This phenomenon is called 'shio-tsunami' (bore), 'kaisho' (tsunami-induced bore) or simply 'tsunami' (tidal wave) in Japan. After breaking, a tsunami wave propagating in shallow-waters is led by a bore. In these rivers and shallow-water bays, the propagation of the bores is associated with strong mixing and massive sedimentary processes upriver. This contribution reviews a number of tsunami-induced bore disasters, before studying the tsunami propagation upriver. The aim of the contribution is to provide compelling evidences on the turbulent mixing and sediment processes induced by tsunami bores based upon some recent field observations as well as physical and numerical studies of tidal bores. It is shown that the propagation of the bore front modifies drastically the water column properties and the tsunami waters behind the front may carry a large amount of sediments, explaining some of the sedimentological and morphological changes observed after some recent disasters.
Keyword Tsunami
River bores
Mixing
Sediment processes
Physical modelling
Numerical modelling
Q-Index Code BX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Book Chapter
Collection: School of Civil Engineering Publications
 
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Created: Wed, 04 Sep 2013, 07:48:19 EST by Hubert Chanson on behalf of School of Civil Engineering