Beach Improvement and Monitoring

Oral

1475 - A Comprehensive Analysis Of Measured And Computed Depth Of Closure Around The Coast Of Japan

Presenting Author(s)

• KU

  Keiko Udo, PhD

  Associate Professor
  Tohoku University

Additional Author #1(s)

• YT

  Yuriko Takeda

Additional Author #2(s)

• RR

  Roshanka Ranasinghe, PhD

  Professor
  IHE Delft/Univ. of Twente/Deltares

The Depth of closure (DoC), i.e., the depth seaward of which significant sediment transport and consequent elevation changes do not occur, is one of the most important parameters in coastal morphodynamics. The present study analyzes both measured DoCs and wave datasets at multiple beaches in Japan, and re-evaluates the applicability of the Nicholls’s (1998) equation.　The DoCs computed using the equation show good agreement with measured values at 12 beaches analyzed so far. The DoCs computed with reanalyzed wave data appear to be slightly less accurate compared to those computed using measured wave data.