河川レーザ測量のための水面下河床高の力学的内挿補間法

• 内田 龍彦

  広島大学

• 河原 能久

  広島大学

• 吉田 晋

  広島大学

• 森山 学

  復建調査設計株式会社

書誌事項

タイトル別名

• HYDRODYNAMIC INTERPOLATION METHOD OF SUBMERGED RIVER BED TOPOGRAPHY FOR LASER SCANNING SURVEY

抄録

Recently 3D laser scanner systems have been widely and effectively used to measure the physical environment of river. However, it is still very difficult to obtain submerged river bed topography. To overcome this problem, this paper proposes a new and practical method to interpolate the submerged bed elevation to compensate for the weak points of laser systems. First, we obtain the detailed bed data in an experimental channel by a laser scanner system. The performance of a geometric interpolation method using bed elevation and its gradient at water edges is discussed. Then we show the significance of water surface profile in estimating river bed profile through the comparisons between the interpolated and the measured data. And we formulate a new hydrodynamic interpolation method of river bed topography under water surface using water surface profile. The hydrodynamically interpolated submerged bed river shape is found to show good agreement with the measured data.

収録刊行物

• 水工学論文集

  水工学論文集 52 1057-1062, 2008

  公益社団法人 土木学会

キーワード

• laser scanner
• ground data
• submerged river bed topography
• water surface
• geometric interpolation method
• hydrodynamic interpolation method
• 2D numerical analysis

詳細情報

• CRID: 1390001205171911168
• NII論文ID: 130004043933
• DOI: 10.2208/prohe.52.1057
• ISSN: 18849172
• ISSN: 09167374
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可