| New lake model was developed and integrated to distributed hydrological model YHyM/BTOPMC (University of Yamanashi Hydrological Model and core model of Block-wise use of TOPMODEL and Muskingum - Cunge method). In the model, variation of water level and storage of Tonle Sap Lake was obtained from Satellite observations by TERRA/MODIS images and TOPEX/POSEIDON altimeter data, and used to calibrate the model parameters to simulate water exchange process between Mekong River and Tonle Sap Lake. In this application, decreasing of peak discharge due to effect of reverse flow from Mekong River to Tonle Sap Lake and flooding capacity around Tonle Sap Lake were simulated reasonably. These models are expected to apply to assess variations of flood risk associated with change of hydrometeorological condition. |
