CONTROLLING EFFECTS ON SECONDARY UNDULATIONS BY PLACING BREAKWAERS IN A NARROW BRANCHED BAY

• ASANO Toshiyuki

  Kagoshima University

• SHIMADA Tomoki

  Kagoshima University

• YAMAMOTO Ryutaro

  Japan Inst. of Tech. on Fishing Ports, Grounds and Communities

• KATAYAMA Hiroyuki

  Penta Ocean Construction Co.

Bibliographic Information

Other Title

• 分岐した細長い湾における副振動対策としての防波堤設置の効果について

Abstract

  Particularly in early spring period, large secondary undulations, locally called Abiki, are frequently observed in narrow bays westward facing the East China Sea. Such events sometimes cause serious damage to cargo vessels and fishing boats. To protect fishing facilities from such disastrous secondary undulations, breakwaters or jetties have been placed as the countermeasure. The present study numerically analyzes the resonant properties against incoming long waves with different period in a narrow branched bay of Koshikijima Island, Kagoshima Pref., and investigates the effectiveness of placing breakwaters for reducing the heights of the secondary undulations. Several numerical simulations with varying breakwater positions are conducted, and the variations in resonant properties of a narrow branched bay are examined.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 67 (2), I_886-I_891, 2011

  Japan Society of Civil Engineers

Keywords

• Secondary undulation
• Harbor resonance
• Coastal disaster

Details

• CRID: 1390001205353869952
• NII Article ID: 130004558523
• DOI: 10.2208/jscejoe.67.i_886
• ISSN: 21854688
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed