RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Characteristics of Riverbed Configuration Affected by River-crossing Structures

        Takeyoshi Chibana,Daisuke Harada,Kimiko Yamashita,Tatsuya Asai 대한토목학회 2012 KSCE Journal of Civil Engineering Vol.16 No.2

        In the middle reaches of gravel-bed rivers, the formation of alternate or linguoid bars provides a diverse microhabitat for many kinds of creatures, much as with riffle pools and dry riverbed areas. The riverbed configuration, however, is completely altered by river-crossing structures, such as weirs or drop structures, installed in a river channel. In this study, both a large river and a small stream that have many river-crossing structures were targeted, and the characteristic feature of the topography in a river channel was investigated. Consequently, there was clarification that a similar pattern of topography was created in both rivers. The elevation gap between the bank and the riverbed was largest just downstream of a river-crossing structure but decreased in the flow direction and disappeared upstream of the next structure. Contrastingly, the width of the low-flow channel was narrowest just downstream of a river-crossing structure and gradually increased in the flow direction. The implication was that the longitudinal profile of the bank was determined by significant past floods and the low-flow channel was gradually created by small floods afterwards. Based on these results, we conclude that a change of river-crossing structure height is effective to manage the floodplain for habitat control, and the installation of large boulder is also effective to restore the low-flow channel.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼