Runoff analysis for the period of snow-melting by spectral method

Abstract

In snow areas, spring runoff, comprising mostly snowmelt, is the supply source of hydroelectric power and public water. The authors has been made a fundamental experiment to investigate the role for melting process of snow by atmospheric factors.
In this study, spectral analysis according to the above experimental, is applied to the hydrologic daily data of the real basin of the Okutadami dam. As a result of this analysis, daily total runoff component for the period of snow melting are separated, into three runoff ones and it is understood that the correlation between heat flux and the amount of snowmelt is high in the low·frequency domain.