Development of coastal disaster prevention simulation platform beyond climate change

Climate change, driven by global warming, is increasingly intensifying the frequency and severity of coastal disasters, especially in densely populated coastal regions. Rising sea levels and elevated sea surface temperatures exacerbate the impacts of typhoons, storm surges, and wave overtopping, posing critical threats to coastal infrastructure and communities. An analysis of 35 years of tide gauge data from the Korea Hydrographic and Oceanographic Agency (KHOA) indicates an average sea level rise of 3.06 mm/year, with regional variations of 3.46 mm/year on the east coast and 2.74 mm/year on the south coast. This cumulative rise of approximately 10.7 cm has accelerated shoreline retreat and undermined coastal stability. Hypothetical scenarios based on Typhoon Maemi (2003) reveal that under current sea-level conditions, the storm’s destructive potential would be significantly amplified, particularly along Korea’s southern coast. Intensified typhoons and wave overtopping further jeopardize marine infrastructure and exacerbate sand loss from beaches, particularly in areas with increased artificial structures, such as breakwaters. To address these risks, we propose a state-of-the-art coastal disaster prevention simulation platform. This platform integrates digital twin technology, 3D GIS, and real-time meteorological and oceanographic data to model sea-level rise, typhoon trajectories, storm surges, and coastal erosion. It also provides digital twin based decision-support tools for early warnings, disaster preparedness, and adaptive response strategies. This study highlights the necessity of a coordinated, multi-agency approach involving Korean governmental bodies (e.g., MOF, MIS) and research institutions (e.g., KIOST and NDMI). By leveraging marine big data, this platform enhances coastal resilience and facilitates sustainable management practices in the face of a rapidly changing climate.