1042 / 2024-09-20 09:42:22

Digital twins of the nearshore ocean for wave and storm surge disaster mitigation

nearshore,wave,storm surge,digital twin ocean,disaster mitigation,Numerical model

Traditional nearshore wave and storm surge simulations often lack consideration of hypothetical disaster mitigation scenarios and present results in a relatively simplistic manner. This study, taking the nearshore area of Aomen Road in Qingdao as an example, proposes a digital twin of the ocean (DTO) for nearshore wave and storm surge hazards, aiming to provide a more intuitive and effective tool for nearshore marine disaster mitigation. A framework for a nearshore DTO system is established. Using drone-based oblique photography and Real-Time Kinematic measurements, a high-precision 3D real-world model was constructed, and a 3D rendering engine was utilized to simulate the marine environment. Buoy observation data were integrated into the DTO system to achieve real-time interaction between the digital ocean and the real ocean. High-resolution wave and storm surge models were developed, enabling the simulation and forecasting of nearshore waves and storm surges within the DTO system. Various historical scenarios, extreme scenarios, and scenarios incorporating disaster mitigation measures such as seawalls and sandbags were built to address the "what-if" questions in marine disaster mitigation. This technology provides an intuitive and efficient decision support tool to ocean administrations.