In this research, the resilience variation of the Chungju-dam basin was assessed using rainfall and runoff data from 1986 to 2017. In recent years, the concept of disaster prevention for natural disasters has changed from resistance to resilience, which is the ability to absorb and restore from dist...
In this research, the resilience variation of the Chungju-dam basin was assessed using rainfall and runoff data from 1986 to 2017. In recent years, the concept of disaster prevention for natural disasters has changed from resistance to resilience, which is the ability to absorb and restore from disturbances. Therefore, according to this trend, the resilience of chungju-dam basin was assessed in the viewpoint of water use and flood. For this purpose, the rainfall-runoff data of Chungju-dam basin were used to estimate the runoff response from rainfall. As a result, unprecedented rainfall occurred in the Chungju-dam basin in 2011, which was more than 50% higher than the average. On the other hand, unexpectedly, the maximum value of yearly runoff occurred in 1990, not in 2011. The average annual precipitation in 1990 was about 30% less than in 2011. Therefor, it was considered that the resilience has been decreased in viewpoint of water use. In order to analyse the cause of this, the number of storm events, rainfall amount per rainfall event, annual average and maximum 5 day antecedent rainfall, rainfall intensity, rainfall days and daily maximum rainfall and runoff were calculated and analyzed. As a result, it was possible to derive that the decreasing amount of antecedent rainfall, increasing rainy days, and number of rainfall events were the main factors for decreasing the resilience in water use.
In this research, the resilience variation of the Chungju-dam basin was assessed using rainfall and runoff data from 1986 to 2017. In recent years, the concept of disaster prevention for natural disasters has changed from resistance to resilience, which is the ability to absorb and restore from disturbances. Therefore, according to this trend, the resilience of chungju-dam basin was assessed in the viewpoint of water use and flood. For this purpose, the rainfall-runoff data of Chungju-dam basin were used to estimate the runoff response from rainfall. As a result, unprecedented rainfall occurred in the Chungju-dam basin in 2011, which was more than 50% higher than the average. On the other hand, unexpectedly, the maximum value of yearly runoff occurred in 1990, not in 2011. The average annual precipitation in 1990 was about 30% less than in 2011. Therefor, it was considered that the resilience has been decreased in viewpoint of water use. In order to analyse the cause of this, the number of storm events, rainfall amount per rainfall event, annual average and maximum 5 day antecedent rainfall, rainfall intensity, rainfall days and daily maximum rainfall and runoff were calculated and analyzed. As a result, it was possible to derive that the decreasing amount of antecedent rainfall, increasing rainy days, and number of rainfall events were the main factors for decreasing the resilience in water use.
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