INFLUENCES OF CLIMATE CHANGE ON BEACH PROFILE
AbstractThe influences of climate change due to global warming have been estimated on not only sea level rise but also wave characteristics such as height or energy flux. In this study, the characteristics of medium and long term beach profile change is investigated based on the observed beach profile data at HORS for past 24 years and the relationship between the wave characteristics observed at Kashima port and the climate indexes. In order to estimate the influences of the medium and long term wave characteristic change, a theory is introduced based on equilibrium beach profile with wave parameter, which is theoretically based on sediment characteristic. Moreover, the validation of the theory is evaluated based on the observed beach profile data and wave data.
Bruun P. 1962. Sea Level Rise as a Cause of Shore Erosion. J. Waterway, Port, Coastal and Ocean Eng., ASCE, 88,117.
Dally, W. R. R. G. Dean and R. A. Dalrymple. 1985. Wave height variation across beaches of arbitrary profile, J. Geophys. Res. 90(C6), pp11917-11927.http://dx.doi.org/10.1029/JC090iC06p11917
Dean, R.G. 1977. Equilibrium Beach Profiles: U.S. Atlantic and Gulf Coasts, Department of Civil Engineering, Ocean Engineering Report No. 12, University of Delaware.
Dean, R.G., T.L. Walton, and D.L.Kriebel, 2001. Cross-shore Sediment Transport, Coastal Engineering Manual, US Army Coastal & Hydraulics Laboratory.
Kobayashi, N., A. Payo, and L. Schmied. 2008. Cross-shore Suspended Sand and Bed Load Transport on Beaches. Journal of Geophysical Research, 113, C07001, doi: 10.1029/ 2007JC004203.
Kobayashi, N., A. Farhadzadeh, and J.A. Melby. 2010. Wave Overtopping and Damage Progression of Stone Armor Layer. J. Waterway, Port, Coastal and Ocean Eng., 136(5), 257-265.http://dx.doi.org/10.1061/(ASCE)WW.1943-5460.0000047
Kuriyama, Y. and M. Banno, and T. Suzuki. 2012. Linkages among interannual variations of shore line, wave and climate at Hasaki, Japan, J. Geophysical Research Letters. Vol.39 L06604, Larson, M. and N.C. Kraus. 1989. SBEACH: Numerical Model for Simulating Strom Induced Beach Change, U.S..Army Corps of Engrs., CERC, Tech Rpt. CERC-89-9.doi:10.1029/2011GL050704.http://dx.doi.org/10.1029/2011GL050704
Mori, N. R. Iwashima, T. Yasuda, H. Mase, T. Tracey. 2009. Projection of Global Winds and Waves under Global Warming Scenario, Journal of JSCE, Ser. B2 (Coastal Engineering), Vol.65, pp.1271-1275. (in Japanese)
Mori, N. T. Shimura, T. Yasuda, H. Mase. 2010. Projection of Extreme Waves under a Global Warming Scenario. Journal of JSCE, Ser. B2 (Coastal Engineering), Vol.66, pp.1231-1235. (in Japanese)
Suzuki T., and Y. Kuriyama. 2008. Relationships between shoreline change rate, wave energy flux and longshore current velocity in long-term shoreline change. Journal of JSCE, Ser. B, Vol.64, No.4 pp.280-290. (in Japanese)