Special Issue (Global Environment Engineering)Paper
FEASIBILITY OF EXTRACTING FEATURES OF 109 CLASS-A WATERSHEDS IN JAPAN BY USING HYPSOMETRIC CURVES
2023 Volume 79 Issue 27 Article ID: 23-27018
Details
2023 Volume 79 Issue 27 Article ID: 23-27018
In this study, we developed hypsometric curves for 109 class-A river watersheds in Japan. We proposed a new model function to optimize the hypsometric curves. As a result, the coefficient of determination exceeded 0.85 in more than 80% of the watersheds in Japan, and the hypsometric curves were reproduced with high accuracy. Cluster classification was performed based on the parameters obtained by optimization, and consistency with cluster classification based on topographical information such as watershed area and length of trunk river channel was examined. As a result, the Yodo River and the Shonai River, and the Yahagi River and the Kuzuryu River were classified into the same cluster, indicating the possibility of extracting basin characteristics from the parameters of the new model function proposed in this study.
