Author(s): Ioanna Zotou; Kleanthis Karamvasis; Vassilia Karathanassi; Vassilios A. Tsihrintzis
Linked Author(s): Vassilios A. Tsihrintzis
Keywords: No Keywords
Abstract: Hydrodynamic models are valuable tools in the direction of flood forecasting and mitigation of the subsequent damages. Various kinds of satellite data have been widely exploited to assist flood models in different ways over the last decades. The present work seeks to investigate the sensitivity of an integrated 1D/2D hydraulic model, in the variation of roughness coefficient and upstream inflow. For the generation of the upstream inflow, a hydrologic simulation of the contributing watershed combined with a Monte-Carlo uncertainty analysis was performed. The influence of roughness coefficient changes in model results was tested by examining separately the main channel and the 2D area. In order to quantify model performance, simulation results were compared against a satellite data-derived inundation boundary. In the latter case, an automatic flood delineation approach (FLOMPY), which exploits multi-temporal Sentinel-1 radar data has also been employed. The presented methodology was applied in a flood event which took place in early February 2015, in Spercheios River, Central Greece.
Year: 2022