CROSS-SHORE MODEL APPLICATION TO HASAKI BEACH, JAPAN: EVALUATION OF PARAMETER SETTING

Koshi Kato,Keiko Udo

doi:10.9753/icce.v36v.sediment.23

Abstract

Japan's coasts is being suffered by significant erosion. There is already a high demand to protect coasts from the erosion but climate change threatens further erosion. Udo and Takeda (2017) projected future beach loss in Japan due to sea-level rise using Bruun rule. However, its restrictive assumption that they probably do not exist in nature makes difficult to assess uncertainties of the projection results. In this paper, Cross-shore (CS) model developed by Larson et al. (2016), which is more realistic model considering the cross-shore sediment exchange, is applied to calibrate the parameter settings at Hasaki beach in Japan, and model applicability was evaluated.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/sOFr9Jb5a_s

Highlights

Japan’s coasts is being suffered by significant erosion
Cross-shore (CS) model developed by Larson et al (2016), which is more realistic model considering the cross-shore sediment exchange, is applied to calibrate the parameter settings at Hasaki beach in Japan, and model applicability was evaluated
The CS model was applied to the Hasaki beach profile for 10-year period from 6 June 1998 to 27 December

Summary

INTRODUCTION

Japan’s coasts is being suffered by significant erosion. There is already a high demand to protect coasts from the erosion but climate change threatens further erosion. Udo and Takeda (2017) projected future beach loss in Japan due to sea-level rise using Bruun rule. Its restrictive assumption that they probably do not exist in nature makes difficult to assess uncertainties of the projection results. Cross-shore (CS) model developed by Larson et al (2016), which is more realistic model considering the cross-shore sediment exchange, is applied to calibrate the parameter settings at Hasaki beach in Japan, and model applicability was evaluated

METHODOLOGY

RESULTS

DISCUSSION AND CONCLUSION