نوع مقاله : مقاله پژوهشی
گروه مهندسی نقشه برداری دانشکده مهندسی دانشگاه زنجان زنجان ایران
عنوان مقاله [English]
Floods have many destructive, economic, social, and environmental impacts. The occurrence of this phenomenon in the West and South West of Iran has caused many challenges for the region and its people. One of the most important hydrological parameters affecting this phenomenon is Total Water Storage (TWS). The purpose of this study is to use the GRACE and GRACE FO TWS time series data, as well as TRMM rainfall time series, to extract the flood potential index (FPI). FPI is used to check the occurrence of floods in the study area. The geographical area investigated in this research is between 49-45 degrees of longitude and 30-35 degrees of latitude, which includes many West and South West of Iran, and the studied time period is from 2002-2019. Is. In this research, the TWS anomaly extracted from the data of the GRACE satellites was validated using the water balance equation and TRMM satellite precipitation data, MODIS evapotranspiration data, and GLDAS hydrological model runoff data. The results obtained for GRACE and FO GRACE satellites yielded RMSE values of 0.034 m and 0.051 m, respectively. Then, in order to predict the possibility of floods, the process of determining the Flood Potential Amount (FPA) using the the GRACE/GRACE FO TWS data and the TRMM rainfall data between between 2002 and the end of 2019. Finally, the obtained FPA was used to determine the FPI. The obtained results showed that the FPI index is able to detect many floods occurred in the studied area.