Runoff Characteristics in the Lake Toya Basin, Hokkaido
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概要
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Water discharge to Lake Toya and the runoff characteristics in the basin were investigated to obtain data of the inflow that controls the lake water and to determine the hydrological characteristics of the lake basin, especially in the Mt. Usu region. River runoffs were observed on Nov. 29-30, 1983 at 55 sites in 87 sub catchments of the lake basin. The 87 sub catchments were grouped into 8 regions, from considerations of the respective geological conditions. With the data of the mean specific runoffs and the geology of the 8 regions, the Lake Toya basin was classified into three major hydrological regions: (1) a moderate specific runoff region composed of Neogene andesites; (2) a high specific runoff region composed of Neogene andesites overlain by Toya Pumice Flow sediments; and (3) a low specific runoff region composed of Quaternary volcanic rocks from the Usu volcano. It was determined that the Mt. Usu region is hydrologically characterized by the properties of the low specific runoff region.
- 北海道大学の論文
著者
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Urano Shin-ichi
Laboratory Of Fundamental Research Division Of Environmental Structure Graduate School Of Environmen
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Urano Shin-ichi
Laboratory Of Fundamental Research Division Of Environmental Structure Graduate School Of Environmen
関連論文
- Water Quality of Lake Toya and of all the Lake's In- and Outflow Rivers
- Runoff Characteristics in the Lake Toya Basin, Hokkaido
- Hydrological Characteristics of the Lost River in the Ruoergai Wetland, China