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The paper describes concept and implementation details of integrating afinite element module for dike stability analysis Virtual Dike into an earlywarning system for flood protection. The module operates in real-time mode andincludes fluid and structural sub-models for simulation of porous flow throughthe dike and for dike stability analysis. Real-time measurements obtained frompore pressure sensors are fed into the simulation module, to be compared withsimulated pore pressure dynamics. Implementation of the module has beenperformed for a real-world test case - an earthen levee protecting a sea-portin Groningen, the Netherlands. Sensitivity analysis and calibration ofdiffusivities have been performed for tidal fluctuations. An algorithm forautomatic diffusivities calibration for a heterogeneous dike is proposed andstudied. Analytical solutions describing tidal propagation in one-dimensionalsaturated aquifer are employed in the algorithm to generate initial estimatesof diffusivities.

Modeling Earthen Dike Stability: Sensitivity Analysis and Automatic Calibration of Diffusivities Based on Live Sensor Data