현재의 지형은 지형윤회 현상(수만년 단위) AbstractThis study is aiming at reviewing how to set the reference point based on the topography and location characteristics to develop a means of debris hazard management of urban mountain. This study used in each of three models for predicting the moveable debris discharge and reaching distance. According to the results reviewed on Seoul Mt. Umyeon district, it was delineated and divided as the total of 46 watershed. (b), (d) and (e) of the adopted models are specified as reasonable on calculating debris quantity and reaching distance. But predicted quantity and distance are specified as over-estimated when the adopted result values is compared with on-site. Although the models gets excessive estimates, they can demarcate the area of production and deposition. Therefore these models are considered to be adoptable in making the base map for field referencing and managing on a given urban mountain.

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