A Study of Drought/Flood Type in Eastern China

Spatial pattern of drought/flood was studied based on the drought/flood level time series of 524-year (1470~1993) in 25 stations of eastern China. Due to the differences between EOF and REOF methods, the improvement on the old six drought/flood types was demonstrated by using REOF analysis. It is better to show the factual drought/flood pattern and easier to study temporal characteristics by six key area. Also, the main characteristics of drought/flood in eastern China were described for last five hundred years or so.