Based on fractal theory, time sequence of inundated area of cropland due to flood disaster from 1950 to 1997 are studied.

运用分形理论对1950 ~ 1997年我国洪涝灾害农田成灾面积序列进行了研究。

Calculation of backwater in reservoir is foundational for defining inundated area in a reservoir and demonstration a planned program.

水库回水计算是确定水库淹没范围，进行规划方案论证的基础工作。

Empirical mode decomposition (EMD) method was used to study the fluctuation of inundated area of flood disaster from 1949 to 2002 in Hunan Province.

应用经验模态分解(EMD)方法分析了湖南省1949 ~ 2002年洪涝灾害成灾面积波动情况。