| Title |
Compound Flood Modeling in Coastal Areas near the Mispillion River Mouth: A Preliminary Study using the River Discharge and Precipitation Modules in FUNWAVE |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.4.0483 |
| Keywords |
해안 범람; 복합 홍수 모형; FUNWAVE-TVD; 하천유출 및 강우; 위상 해석 수치모델; 델라웨어만/미스필리언강 Coastal flooding; Compound flood modeling; FUNWAVE-TVD; River discharge and precipitation; Phase-resolving simulation; Delaware Bay/Mispillion River |
| Abstract |
To address the growing risk of coastal flooding driven by sea level rise and increasingly frequent extreme storm surges, a preliminary study was conducted using the phase-resolving Boussinesq model FUNWAVE-TVD. A newly developed module incorporating river discharge and precipitation was implemented to simulate hydrodynamic processes in the coastal and estuarine region surrounding the Mispillion River in Delaware Bay, eastern United States. The study examined the influence of compound flooding on estuarine water levels. Results showed that elevated coastal water levels increased water stages in the estuary and lower river reach, inducing flow retardation and reversal. Simultaneous direct inundation from storm surge and inland inundation through the river channel were observed. In downstream and low-lying areas, the superposition of multiple forcings intensified inundation extent. Additionally, drainage limitations caused prolonged flooding even after coastal water levels subsided. This test highlights the applicability of the enhanced FUNWAVE-TVD framework for simulating compound flooding in coastal and estuarine systems and emphasizes the importance of riverine inputs in phase-resolving models. |