Verification of Corrected COMCOT Numerical Model Using Dispersion Correction Method

Choi, Young-Kwang; Son, Sangyoung

doi:2025.37.6.263

Journal of Korean Society of Coastal and Ocean Engineers > Volume 37(6); 2025 > Article

Article

J Korean Soc Coast Ocean Eng 2025;37(6): 263-271. doi: https://doi.org/10.9765/KSCOE.2025.37.6.263

분산보정기법을 사용한 수정 COMCOT 수치모형의 검증

최영광¹, 손상영²

¹한국전력기술 구조부지기술실 차장
²고려대학교 건축사회환경공학부 교수

Verification of Corrected COMCOT Numerical Model Using Dispersion Correction Method

Young-Kwang Choi¹, Sangyoung Son²

¹Senior Engineer, Structural & Site Engineering Department, KEPCO E&C
²Professor, School of Civil, Environmental, and Architectural Engineering, Korea University

Corresponding author: Young-Kwang Choi ,Tel: +82-54-421-6176, Email: ykchoi@kepco-enc.com

Received: October 20, 2025; Revised: November 23, 2025. Accepted: December 1, 2025.

ABSTRACT

Tsunami simulations based on the COMCOT numerical model have predominantly used either linear or nonlinear shallow water equations. Although COMCOT includes a dispersion correction scheme applicable to regions with varying bathymetry, its application requires corrections to the model’s source code. In this study, a corrected version of COMCOT, where the dispersion correction scheme is properly implemented, is used to simulate tsunami propagation with dispersion effects. The corrected model is validated against analytical solutions and further evaluated by comparing the simulation results with observational data from the 1983 Akita Tsunami event.

Keywords: COMCOT, dispersion correction method, analytical solution, 1983 Akita Tsunami