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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.51 no.8, 2018년, pp.665 - 676
Interrill erosion on a hillslope results from the combined action of the detachment of soil particles by raindrop impact and the sediment transport of surface runoff. This study newly defined the rainfall power which detaches soil particles and the sheet-flow power contributed to sediment transport ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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면상흐름은 어떤 문제점을 유발하는가? | 거친 경사면에서 수심이 얕은 면상흐름(sheet flow)은 그물과 같은 유로 망이 광범위하게 형성되는 지표유출의 한 형태를 보인다. 이러한 면상흐름은 빗방울이 지면을 직접 타격 하는 공간을 제공하고, 타격 과정에서 난류를 강화시켜 더 많은 토양침식을 일으킨다(Palmer, 1964). 수심이 증가하면 강우의 지표타격과 빗물튀김(raindrop splash)에 의한 토양입자의 분리(detachment) 현상은 줄어든다(Torri et al. | |
거친 경사면에서 수심이 얕은 면상흐름(sheet flow)은 어떤 형태를 보이는가? | 거친 경사면에서 수심이 얕은 면상흐름(sheet flow)은 그물과 같은 유로 망이 광범위하게 형성되는 지표유출의 한 형태를 보인다. 이러한 면상흐름은 빗방울이 지면을 직접 타격 하는 공간을 제공하고, 타격 과정에서 난류를 강화시켜 더 많은 토양침식을 일으킨다(Palmer, 1964). | |
강우입자의 충돌과 면상흐름의 상호작용에 의해 발생하는 세류간 토양침식에 있어서 강우충격과 면상흐름의 상대적인 토양침식 기여도에 대한 연구가 많지 않은 이유는? | , 2015). 이를 분리하는 것이 용이하지도 않을 뿐더러, 이들의 상호작용이 에너지를 감소시켜 토양침식에 직접적으로 영향을 끼치기 때문이다. 위에서 제시한 강우·면상흐름 동력 식에서 상수 α, β는 강우운동에너지와 유출수운동에 너지에 의한 토양침식의 기여도 평가의 지표가 될 수 있다. |
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