변종민 교수

Abstract The processes involved in the development of high‐altitude, low‐relief areas (HLAs) are still poorly understood. Although cosmogenic nuclides have provided insights into the evolution of HLAs interpreted as paleo‐surfaces, most studies focus on estimating how slowly they erode and thereby their relative stability. To understand actual development processes of HLAs, we applied several techniques of cosmogenic nuclides in the Daegwanryeong Plateau, a well‐known HLA in the Korean Peninsula

Along the eastern margin of the Korean Peninsula, a coastal mountain range spanning over 800 km with summits above 1500 m faces the East Sea (or Sea of Japan), the back-arc sea behind the Japanese Islands. Two contrasting hypotheses exist regarding the tectonic history of this coastal mountain range: long-lasting and progressive uplifts from the Early Tertiary to the Late Quaternary, and a short and intensive uplift during the Early Miocene. However, to date, no consensus has been reached. Here,

Research Article| July 01, 2017 Small profile concavity of a fine-bed alluvial channel Jongmin Byun; Jongmin Byun 1School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea2Department of Civil Engineering and Environmental Sciences, Korea Military Academy, P.O. Box 77-2, Hwarang-ro, Nowon-gu, Seoul 01805, South Korea Search for other works by this author on: GSW Google Scholar Kyungrock Paik Kyungrock Paik 1School of Civil

<p>Valleys associated with convergent topography are common features on the earth’s surface. Valley bottoms along which most rivers flow have been considered geomorphologically important since stream channels adjust their forms within them and, consequently, the width of the valley bottom determines the planform and type of channel reach. The headwater streams comprise transitional and colluvial channels and account for nearly 70 to 80 percent of the river network. Th

<p>High-elevation steep escarpments in the passive continental margins are known to have resulted from long-lasting erosion following rifting-related marginal uplift. However, recent studies have revealed that rifting-related processes alone do not explain the high-elevation marginal escarpment. Particularly, post-rift rejuvenation could contribute to the growth of the relief of the long-lived escarpment. A steep escarpment rising above 1,700 m occurred along the eastern margin of

<div> <p>Bedrock river is rock-bound, its bed and banks are composed mainly of in-place bedrock. Bedrock channel reaches, commonly short and intermittent, often occur where transport capacity exceeds bedload sediment flux. Despite the abundant research on the typical patterns of alluvial channel reaches, the distribution of bedrock channels has not been well studied. Rock type may affect the occurrence of bedrock channels because the strength, joint density, and erosi

In mountainous areas in the Republic of Korea, landslides occur primarily due to heavy rainfall in the summer monsoon season. While these landslides tend to occur seasonally in summer, the rainfalls that have triggered landslides are complex and varied. Temporal prediction of landslides based on the variables of rainfall events mainly uses two variables: intensity-duration or cumulative event rainfall-duration. However, it does not consider the antecedent rainfall, another critical factor that c

<p>Headwater catchments, each of which consists of hillslopes, valley heads, and colluvial channels, make up a major portion of a drainage basin, supplying sediment, water, and nutrients downstream. In a headwater catchment, valley heads where hillslope diffusive transport transits to fluvial transport play an important role in channel initiation. Headwater catchments where mass movements are dominated are sensitive to human activities. Human activities in headwater catchments, suc