Inverse Estimation of Sea Surface Drag Coefficient Based on Ocean Model or Storm Surge Model

• Project/Area Number: 22760375
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Hydraulic engineering
• Research Institution: Kyushu University
• Principal Investigator: YOKOTA Masaki 九州大学, 工学研究院, 助教 (60432861)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 海面抵抗係数 / データ同化

Research Abstract

The data assimilation model that can estimate the appropriate sea surface drag coefficient for each wind speed was developed and was applied to real sea condition. As a result, reasonable coefficients were estimated from the arbitrary initial parameters. Also, it was clarified to be able to deduce drag coefficient in high wind speed if waves were propagated from strong wind region even if the strong wind had not been generated in the observation station.

Research Products

• [Journal Article] うねりを観測する条件での海面抵抗係数の逆推定精度に関する検討 (2011)
  • Author(s): 横田雅紀, 橋本典明, 田中雄太, 児玉充由
  • Journal Title: 土木学会論文集B3(海洋開発) Volume: Vol.67, No.2 Pages: 903-907
  • NAID: 130004558526
  • Peer Reviewed
• [Journal Article] Noriaki HASHIMOTO, Yuta TANAKA, Inverse Estimation of Sea Surface Drag Coefficient Based on Waves Observed Away from Strong Wind Region (2011)
  • Author(s): Masaki YOKOTA
  • Journal Title: Region, Proceedings of the 21st International Offshore and Polar Engineering Conference Volume: 3 Pages: 428-433
  • Peer Reviewed
• [Journal Article] うねりを観測する条件での海面抵抗係数の逆推定精度に関する検討 (2011)
  • Author(s): 横田雅紀, ら
  • Journal Title: 土木学会論文集B3(海洋開発) Volume: 67 Pages: 903-907
  • NAID: 130004558526
  • Peer Reviewed
• [Journal Article] Inverse Estimation of Sea Surface Drag Coefficient Based on Waves Observed Away from Strong Wind Region (2011)
  • Author(s): Masaki YOKOTA, et al
  • Journal Title: Proceedings of the 21st International Offshore and Polar Engineering Conference Volume: 21-vo13 Pages: 428-433
  • Peer Reviewed
• [Presentation] 現地海域における海面抵抗係数の逆推定に関する研究 (2012)
  • Author(s): 河端浩平,橋本典明,横田雅紀,児玉充由
  • Organizer: 土木学会西部支部研究発表会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2012-03-03
• [Presentation] うねりを観測する条件での海面抵抗係数の逆推定精度に関する検討 (2011)
  • Author(s): 横田雅紀,橋本典明,田中雄太,児玉充由
  • Organizer: 第36回海洋開発シンポジウム
  • Place of Presentation: 愛媛大学
  • Year and Date: 2011-07-01
• [Presentation] Noriaki HASHIMOTO, Yuta TANAKA (2011)
  • Author(s): Masaki YOKOTA
  • Organizer: Inverse Estimation of Sea Surface Drag Coefficient Based on Waves Observed Away from Strong Wind Region the 21st International Offshore and Polar Engineering Conference
  • Place of Presentation: マウイ
  • Year and Date: 2011-06-21