Review on Nonstationary Hydrological Frequency Analysis under Changing Environments

摘要: The assumption of stationarity is a basic premise behind conventional hydrological frequency analysis for design water resources projects. Under changing environments, series in many rivers have been found to exhibit nonstationarity. As result, the methods based on may be invalid. In recent years, nonstationary has attracted much attention. this paper, researches are briefly reviewed terms four aspects: 1) detection nonstationarity univariate series; 2) mathematical description and physical attribution 3) definition calculation return period events under conditions; 4) multivariate series. Finally, some perspectives presented further development improvement analysis.