MODELLING THE IMPACT OF TSUNAMIS ON COASTAL DEFENCES IN THE UK

Maurice V. McCabe, Peter K. Stansby, Lee S. Cunningham, Benedict D. Rogers

Abstract


This paper describes a study that is part of a wider project investigating whether climate change will increase the risk to the UK from tsunamis caused by submarine landslides in the Arctic. Here, the nearshore modelling of tsunamis and damage to coastal structures will be investigated. Therefore a shallow-water and Boussinesq (SWAB) model has been coupled to a mass-spring model to investigate nearshore wave-structure interactions. This coupled model has been tested against experimental data for wall deflection due to solitary waves and caisson sliding due to regular waves. Although some results are promising, further investigation is required before using this technique as a predictive tool.

Keywords


tsunami modelling; nearshore; Boussinesq model; wave forces; wave-structure interaction

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References


American Wood Council. 2012. National Design Specification (NDS) for Wood Construction, ANSI/AWC NDS-2012. American Wood Council, Washington, DC.

Arvidsson, R. 1996. Fennoscandian earthquakes: whole crustal rupturing related to postglacial rebound, Science, 274, 744–746.

Borlase, W. 1755. Letter to Rev. Charles Lyttleton, Philisophical Transactions, 49, 373–378.

Canadian Plywood Association. 2012. Plywood Design Fundamentals, http://www.canply.org/pdf/main/plywood_designfund.pdf, 20 pp.

Canadian Plywood Association. CanPly Engineered Values, http://www.canply.org/pdf/main/engineered%20values.pdf, 6 pp.

Cuomo, G., G. Lupoi, K. Shimosako and S. Takahashi. 2011. Dynamic response and sliding distance of composite breakwaters under breaking and non-breaking wave attack, Coastal Engineering, 58, 953–969.

Haflidason, H., H.P. Sejrup, A. Nygård, J. Mienert, P. Bryn, R. Lien, C.F. Forsberg, K. Berg and D. Masson. 2004. The Storegga Slide: architecture, geometry and slide development, Marine Geology, 213, 201–234.

Hill, J., G.S. Collins, A. Avdis, S.C. Kramer and M.D. Piggott. 2014. How does multiscale modelling and inclusion of realistic palaeobathymetry affect numerical simulation of the Storegga Slide tsunami? Ocean Modelling, 83, 11–25.

Hill, J. 2014. Personal Communication.

Horsburgh, K. and M. Horritt. 2006. The Bristol Channel floods of 1607 – reconstruction and analysis, Weather, 61, 272–277.

Hu, W., M. McCabe, D. Apsley and P. Stansby. 2013. Web application in 1-D shallow water near shore wave simulation, Journal of Teaching and Education, 2(2), 509–522.

Linton, D., R. Gupta, D. Cox, J. van de Lindt, M.E. Oshnack and M. Clauson. 2013. Evaluation of Tsunami Loads on Wood-Frame Walls at Full Scale, Journal of Structural Engineering, 139(8), 1318–1325.

Madsen, P.A., D.R. Fuhrman and H.A. Schäffer. 2008. On the solitary wave paradigm for tsunamis, Journal of Geophysical Research, 113, C12012.

Madsen, P.A. and O.R. Sørensen. 1992. A new form of the Boussinesq equations with improved linear dispersion characteristics. Part 2. A slowly varying bathymetry, Coastal Engineering, 18, 183–204.

McCabe M.V., P.K. Stansby and D.D. Apsley. 2013. Random wave runup and overtopping a steep sea wall: Shallow-water and Boussinesq modelling with generalised breaking and wall impact algorithms validated against laboratory and field measurements, Coastal Engineering, 74, 33–49.

McCabe, M.V., P.K. Stansby, B.D. Rogers and L.S. Cunningham. 2014. Boussinesq modelling of tsunami and storm wave impact, Proceedings of the ICE – Engineering and Computational Mechanics, 167(EM3), 106–116.

Monserrat, S., I. Vilibić and A.B. Rabinovich. 2006. Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band, Natural Hazards and Earth System Science, 6, 1035–1051.

Rienecker, M.M. and J.D. Fenton. 1981. A Fourier approximation method for steady water waves, Journal of Fluid Mechanics, 104, 119–137.

Rogers, B.D., R.A. Dalrymple and P.K. Stansby. 2010. Simulation of caisson breakwater movement using 2-D SPH, Journal of Hydraulic Research, 48, 135–141.

Smith, D., S. Shi, R.A. Cullingford, A.G. Dawson, S. Dawson, C.R. Firth, I.D.L. Foster, P.T. Fretwell, B.A. Haggart, L.K. Holloway and D. Long. 2004. The Holocene Storegga Slide tsunami in the United Kingdom, Quaternary Science Reviews, 23, 2291–2321.

Wang Y.-Z., Chen, N.-N. and Chi, L.-H. 2005. Numerical simulation on joint motion process of various modes of caisson breakwater under wave excitation, Communications in Numerical Methods in Engineering, 22, 535–545.

Western Wood Products Association. Western Lumber Product Use Manual. http://wwpastore.org/products/western-lumber-products-use-manual, 24 pp.




DOI: https://doi.org/10.9753/icce.v34.structures.36