• Title/Summary/Keyword: 퍼로우

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A review and new view on the study on minor erosional forms in bedrock channels in Korea (한국의 기반암 하상 침식 지형 연구)

  • KIM, Jong Yeon
    • Journal of The Geomorphological Association of Korea
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    • v.18 no.4
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    • pp.35-57
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    • 2011
  • Minor erosional forms in the bedrock river, like potholes, are not just research subject for the professional geomorphologis. In addition, these features attract general public and make them understand the social contribution and importance of geomorphologic research activities. In this paper, the studies on bedrock minor forms in Korea was reviewed. For further researches, some of major erosional processes and minor forms in bedrock rivers were discussed in detail. Cavitation, plucking, hydro-wedging, and abrasion by passing sediment particles are the major processes to create the longitudinal or transverse minor forms like pothole, furrows, flutes, and runnels. Especially the definition of furrows and runnels are explained to prevent the confusion with pothole, weathering pits and grooves. To make a progress in research on bedrock minor forms the quantitative relationship between the variables should be studied. New techniques for scientific estimation of erosion rates and exposure ages of bedrock surfaces should be used in this field.

Analysis on pothole landforms at Naerin River in Inje-gun (인제군 내린천의 포트홀 지형 분석)

  • LEE, Gwang-Ryul;KIM, Dae Sik;KIM, Chang Hwan
    • Journal of The Geomorphological Association of Korea
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    • v.19 no.2
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    • pp.113-122
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    • 2012
  • The geomorphic properties of potholes at Naerin River, Inje-gun are analyzed to discover the geosites of DMZ geopark in Gangwon-do. The furrow-type potholes along the river flow are mainly found in the P1 and P2 sites. The P3 site can be divided in to the zones where the furrow-type potholes densely distribute and various types of potholes are scattered, while the various types of small potholes are scattered in the P4 site. After measuring the 44 potholes, the potholes with a U-shaped cross-section, similar directivity with river flow and deposited gravels with in them show large values in length, width, depth and slope. Because the P1 and P2 sites are characteristic in the scales and forms of potholes and show beautiful scapes, it can be suggested that they are suitable for the geosite developments.