Application of a new discharge estimation method using multipoint water level hydrographs to a flood in the Minochi river

• Iwakoke Yasuhiro

  広島大学大学院博士前期課程

• Kawahara Yoshihisa

  広島大学大学院工学研究科

• Morishita Yu

  パシフィックコンサルタンツ (株)

• Uchida Tatsuhiko

  中央大学研究開発機構

Bibliographic Information

Other Title

• 多点水位ハイドログラフを用いた新しい流量推定法の水内川への適用

Abstract

A new estimation method of discharge hydrograph during floods, which numerically solves the shallow water equations using multipoint water level hydrographs, is applied to a flood in the Minochi river. The physical environmental data of the river is so limited that topographical surveying using GPS, total stations and 3-d terrestrial laser scanning has been carried out along with continuous observation of water levels at several stations. Concurrently a stage-discharge curve in the river reach is produced by 2-d numerical simulations for relatively low and steady flows. The two methods are applied to a flood discharge in 2007 in the river. It is shown that the new discharge estimation method can give discharge hydrograph, whose peak value agrees well with that estimated by the stage-discharge curve.

Journal

• Journal of applied mechanics

  Journal of applied mechanics 11 689-698, 2008

  Japan Society of Civil Engineers

Keywords

• water level hydrograph
• discharge hydrograph
• 2-d model
• Minochi river

Details

• CRID: 1390282680184469632
• NII Article ID: 130004091282
• DOI: 10.2208/journalam.11.689
• ISSN: 1884832X
• ISSN: 13459139
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed