• Title/Summary/Keyword: 쟁탈 전선

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Drainage Derangement and Revision by the Formation of Cheolwon-Pyeonggang Lava Plateau in Chugaryeong Rift Valley, Central Korea (추가령 열곡의 철원-평강 용암대지 형성에 따른 하계망 혼란과 재편성)

  • Lee Min-Boo;Lee Gwang-Ryul;Kim Nam-Shin
    • Journal of the Korean Geographical Society
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    • v.39 no.6 s.105
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    • pp.833-844
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    • 2004
  • In Chugaryeong rift valley, lava plateau formation by the fissure eruption had vanished original landforms and effected on drainage derangement and revision. 4 rivers including Namdae-cheon, Bukhan-gang, Imjin-gang and Hantan-gang watersheds have shared Cheolwon-Pyeonggang lava plateau, that is, ownerless watershed. Main agency of the dividing process are central-eruption volcanic peaks such as Orisan(453m) and 680 Peak. Especially, Orisan has played the role of divide point for 4 watersheds. In the lower-relief plateau zone, complex drainage system have caused continually river capture between neighboring watersheds. In more elevated range slope, river capture have proceeded to headward erosion. Hydrogeomorphologically, lava-filled valley has initiated decrease of the original size of flood plain, maybe, causing higher capability of inundation by heavy rains, and then more active dissection of lava plateau layer.