LONG-TERM PREDICTION OF BEACH PROFILE AND SEDIMENT GRAIN SIZE CHARACTERISTIC AT LOW ENERGY BEACH

Gozo Tsujimoto; Masahiro Tamai; Fumihiko Yamada

doi:10.9753/icce.v33.sediment.14

No. 33 (2012), Sediment Transport and Morphology

No. 33 (2012)

LONG-TERM PREDICTION OF BEACH PROFILE AND SEDIMENT GRAIN SIZE CHARACTERISTIC AT LOW ENERGY BEACH

Sediment Transport and Morphology

https://doi.org/10.9753/icce.v33.sediment.14

Published 2012-10-25

Gozo Tsujimoto⁺⁻
Masahiro Tamai⁺⁻
Fumihiko Yamada⁺⁻

Gozo Tsujimoto

Kobe City College of Technology

Masahiro Tamai

Osaka University

Fumihiko Yamada

Kumamoto University

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Keywords

principal component analysis
quadratic polynomial equations

How to Cite

Tsujimoto, G., Tamai, M., & Yamada, F. (2012). LONG-TERM PREDICTION OF BEACH PROFILE AND SEDIMENT GRAIN SIZE CHARACTERISTIC AT LOW ENERGY BEACH. Coastal Engineering Proceedings, 1(33), sediment.14. https://doi.org/10.9753/icce.v33.sediment.14

Abstract

Artificial sandy beach profiles and vertical distributions of sediment grain size were measured monthly along two cross-shore lines at Azure Maiko Beach for 2 years. All measured profiles and vertical distributions are approximated using quadratic profiles. To interpret temporal variations of these profiles, six parameters are introduced. Principle component analysis was applied to evolution of the six parameters to detect major variation modes. Relationships between the detected modes and external forces, wave height and tidal level are expressed using multiple linear regression analysis. The first mode was found to be caused by tidal oscillations and the second by energetic wave motions. Long-term prediction of the modes is examined using these regression results.

https://doi.org/10.9753/icce.v33.sediment.14

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References

Goda, Y. 2002. A simple wind wave estimation based on Wilson's prediction formulas, ECOH/YG Technical Report No.1.

Jackson, N. L., K. L. Nordstrom, I. Eliot and G. Masseilink 2002. Low-energy sandy beaches in marine and estuarine environments; a review, Geomorphology, Vol.47, pp.147-162http://dx.doi.org/10.1016/S0169-555X(02)00179-4

Tsujimoto Gozo, F. Yamada, D. Sakai, H. Kaida and T. Kakinoki 2010. Seasonal variation of cross-shore beach profile with a filter layer, Annual Journal of Civil Engineering in the Ocean, JSCE, Vol.26,pp.1209-1214 (in Japanese).

Yamada Fumihiko and N. Kobayashi 2004: Annual variations of tide level and mudflat profile, Journal of Waterway, Port, Costal and Ocean Eng., ASCE,Vol.130,No.3,pp.119-126

Rubin D. M. 2004. A simple autocorrelation algorithm for determining grain size from digital image of sediment, Journal of Sedimentary Research, Vol.74, No.1,pp.160-165http://dx.doi.org/10.1306/052203740160

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LONG-TERM PREDICTION OF BEACH PROFILE AND SEDIMENT GRAIN SIZE CHARACTERISTIC AT LOW ENERGY BEACH

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