2026-03-12T17:41:27Z https://hiroshima.repo.nii.ac.jp/oai

oai:hiroshima.repo.nii.ac.jp:02021849 2025-06-04T05:39:27Z 1727147343679:1730443200205:1730443220099

High Resolution Stream Network in Haji Dam Watershed <Article> Perez-Kuroki, Ana Perez-Kuroki Ana Isozaki, Yoshiyuki Isozaki Yoshiyuki Kikuchi, Akira Kikuchi Akira Nakagoshi, Nobukazu Nakagoshi Nobukazu open access Drainage Direction Matrix Digital Elevation Model Haji Dam landscape structure stream network. 360 The main objective of this research is to find landscape structure of watershed by using the method of hydrological simulations. A watershed is a basic physical entity of the landscape and most processes related to the movement and/or quality of the water occur in the catchment or sub-catchment areas of the watershed. The basic tool used to analyze the landscape of a watershed is Digital Elevation Model (DEM) in order to obtain the Drainage Direction Matrix (DDM) by which is possible to obtain stream network structure. One of the relevant applications of the DDM is to identify possible sources of water pollution by isolating and tracking back the pollutants inside a river network. The main contribution of this study is to present a high resolution stream network in Haji Dam watershed using 10m DEM. By calculating Horton ratios (Rb = 4.45, Rl = 1.93) and fractal dimensional parameters (d = 1, D = 1.97) it is been demonstrated the importance of a high resolution DDM for the precise comprehension of the watershed system and the correct interpretation of it relief, topography and complexity. 広島大学大学院国際協力研究科 2007-03-30 eng departmental bulletin paper VoR https://doi.org/10.15027/28485 https://hiroshima.repo.nii.ac.jp/records/2021849 10.15027/28485 1341-0903 AN10482914 国際協力研究誌 Journal of International Development and Cooperation 13 1 89 89 107 https://hiroshima.repo.nii.ac.jp/record/2021849/files/JIDC_13-1_89.pdf 850.6 KB