Towards high resolution and cost-effective terrain mapping for urban hydrodynamic modelling in densely settled river-corridors

摘要: Abstract With nearly 590 km of waterfront along the main rivers Jakarta, a significant proportion population is exposed to frequent flooding. Further, extensive engineering works on these systems are changing nature and magnitude risk. 2D hydrodynamic modelling can play central role plan manage short long term interventions for Jakarta cities in similar circumstances South South-east Asia but require detailed description terrain as input. dense urban fabric its interaction with flows adds an additional source complexity flood propagation patterns. This paper examines developments field collecting cost-effective high resolution data that contribute growing area modelling. These aerial ground based methods generate point clouds coarse fine grain respectively. We have applied technologies case study 7 km stretch River Ciliwung we evaluated scope providing coverage large segments city. In context this densely settled river corridor, challenge obtaining “hydraulically representative” influence representation structures models explored, alongside identifying future work required allow scaling acquired datasets beyond limits test site.