Author(s): Vince Rainer Abrigonda; Eric Cruz; Elias Garcia

Linked Author(s):

Keywords: Sea level rise; Storm tide; Climate change; Runup; Numerical modelling; Seawall

Abstract: Sea level rise is now required to be considered in the engineering design of coastal protection infrastructure. In order to quantify its impacts on the hazard magnitudes, simulative analyses were carried out to study the effects of sea level rise (SLR) on the computed runup height for the proposed gravity seawall segments along the coast of Camarines Sur, Philippines. The general approach in incorporating the effects of climate change, specifically SLR, based on the Philippine local codes, and SSP scenarios were simulated along with the storm tide levels (STL) and significant wave heights (Hs) under Typhoon 1977 Kim using the MIKE21 Hydrodynamics and Spectral Wave Model. Wave runup was then computed following the equations in the EurOtop manual. Leading results indicate that, while storm tide levels do not all increase, storm wave runups increase by as much as 20% relative to the no-SLR case.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1823-cd

Year: 2025