Laboratory of Drainage and Water Environment, Division of Regional Environment Science, Department of Bioproduction Environmental Science, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
Laboratory of Drainage and Water Environment, Division of Regional Environment Science, Department of Bioproduction Environmental Science, Faculty of Agriculture, Kyushu University
九州大学農学部地域環境科学
Laboratory of Drainage and Water Environment, Division of Regional Environment Science, Department of Bioproduction Environmental Science, Faculty of Agriculture, Kyushu University
九州大学農学部地域環境科学
A technique for determining hydrograph recession characteristics is presented based on the wavelet transforms analysis. Like a signal, a flood hydrograph cam be decomposed into a number of wavelet components. By using the wavelet component values in the form of wavelet maps, the recession characteristics such as a recession constant and a cut-off frequency are easily determined. The technique is demonstrated on three catchments ranging from small to large catchment areas at eastern New South Wales, Australia. The proposed method gives promising results and minimizes a number of problems associated with hydrograph recession analysis.