A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis of the Magnitude of Debris Flows in Korea
AbstractDifferent magnitude of debris flows causes different damages to the surrounding environment. It is important to know its volume in order to be able to be aware of its run-out length and potential damage level. Many researchers have tried to develop regression models for estimating debris flow magnitude, yet they cannot be used in a general context. A research on debris flow in the eastern Italian Alps, for example, a regression equation to determine debris flow magnitude based only on the slope gradient (S) and watershed area (A) as independent variables was suggested. The purpose of this paper is to develop new regression equations by using a database from 26 watershed sites in South Korea, and to compare it with the previous model from other research. The estimated data of debris flow magnitude were obtained from light detection and ranging and a field survey based on expert decision. The new equation, with two terms [i.e., (1) A, and (2) S], gave better result regardless of the other factors (rainfall, soil properties, forest, and so on). A study on combining the factors was carried out, and the addition of 28-day cumulative rainfall and erosion class factors was the most reliable for estimation of the magnitude of debris flows.
Analysis of the Magnitude of Debris Flows in Korea
AbstractDifferent magnitude of debris flows causes different damages to the surrounding environment. It is important to know its volume in order to be able to be aware of its run-out length and potential damage level. Many researchers have tried to develop regression models for estimating debris flow magnitude, yet they cannot be used in a general context. A research on debris flow in the eastern Italian Alps, for example, a regression equation to determine debris flow magnitude based only on the slope gradient (S) and watershed area (A) as independent variables was suggested. The purpose of this paper is to develop new regression equations by using a database from 26 watershed sites in South Korea, and to compare it with the previous model from other research. The estimated data of debris flow magnitude were obtained from light detection and ranging and a field survey based on expert decision. The new equation, with two terms [i.e., (1) A, and (2) S], gave better result regardless of the other factors (rainfall, soil properties, forest, and so on). A study on combining the factors was carried out, and the addition of 28-day cumulative rainfall and erosion class factors was the most reliable for estimation of the magnitude of debris flows.
Analysis of the Magnitude of Debris Flows in Korea
Yune, C. Y (author) / Chhorn, C. R / Kim, G / Lee, S. W
2015
Article (Journal)
English
Analysis of the Magnitude of Debris Flows in Korea
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