FIELD OBSERVATION OF WAVE OVERTOPPING RATE AND SPLASH HEIGHT OVER BLOCK MOUND SEAWALL

• IZUMIYA Takashi

  新潟大学工学部建設学科

• BABA Masahiro

  新潟大学工学部建設学科

• ISHIBASHI Kunihiko

  新潟大学工学部建設学科

Bibliographic Information

Other Title

• 高架橋波浪対策護岸における越波量および水塊打上げ高の現地観測

Abstract

Field observations have been carried out to investigate on splash height and overtopping rate of block mound seawall at the Oyashirazu Coast in Niigata Prefecture. Splash heights were measured by using video camera system. Velocities and depths of a overtopping flow were directly measured by electro-magnetic current meter and ultrasonic-type elevation meter. The main results are in the followings: Relative heights of a splash depend on the relative crown height (hc/Ho) and deepwater wave steepness. They increase their values as the relative crown height become large, whereas the deepwater wave steepness become small. Standard deviations of splash height amount to about 25% of the mean value. The maximum velocities of overtopping flow reach from 6m/s to 8m/s with a depth of 5cm to 20cm. The peak values of overtopping rate measured amount to larger than 0.2m³/s/m.

Journal

• PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN

  PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 21 599-604, 2005

  Japan Society of Civil Engineers

Keywords

• Wave overtopping rate
• wave spray
• splash height
• block mound seawall
• field observation

Details

• CRID: 1390001205204170624
• NII Article ID: 130003950313
• DOI: 10.2208/prooe.21.599
• ISSN: 18848265
• ISSN: 09127348
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed