2024 Volume 80 Issue 17 Article ID: 24-17142
The morphology of sandy beach is expected to change significantly due to climate change-induced sea level rise. However, the prediction is limited to consideration of shoreline changes using modified Bruun rules and similar methods. Therefore, in this study, we modified the source term of XBeach Surface Roller Energy (SRE) in order to simulate the planar topographical changes from the shoreline to the wave-breaking region more accurately. The study focused on the Hamamatsu Shinohara coast in Shizuoka over a period of approximately 7 months. The simulation resulted in more accurate changes in the morphology from near the shoreline to the offshore bar than using the default constant coefficient value. In particular, it was confirmed that setting the SRE dissipation term as a variable dependent on water depth is effective in improving the accuracy of morphological change predictions, and this study provided an effective model for developing adaptation measures against beach loss in the future.
