Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• 外洋におけるハブ高度風況推定技術の検討（その2）―衛星の観測頻度が推定精度に与える影響―

  1. 赤井玲那，大澤輝夫，長谷瑞木，見崎豪之，濱田康平，竹山優子，内山将吾 , 2024.12

  風力エネルギー利用シンポジウム予稿集

• スキャンニングライダーのデュアルPPIスキャンによる海面表層風速場の観測

  嶋田進，ゴイト　ジェイ・プラカス，竹山優子，大澤輝夫 , 2023.12

  風力エネルギー利用シンポジウム予稿集

• 外洋におけるハブ高度風況推定技術の検討（その１）-WRF鉛直プロファイルの検証-

  赤井玲那, 大澤輝夫，上林将輝，小長谷瑞木，見崎豪之，濱田康平，竹山優子 , 2022.12

  風力エネルギー利用シンポジウム予稿集

• 沿岸域における渦相関法とバルク法による 大気安定度評価方法の比較

  西見耕太，竹山優子，稲津大祐 , 2021.12

  日本気象学会2021年度秋季大会予稿集

• 合成開口レーダを用いた海上風推定に適した風向情報

  大久保 諒也，竹山 優子，池谷 毅，大澤 輝夫 , 2021.07

  土木学会論文集B2（海岸工学）

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Study of Offshore Wind Assessment Methodology for Deployment of Offshore Wind Power Generation in EEZ

  Project Period (FY)： 2025/04  -  2029/03  Investigator(s): 大澤 輝夫

  Grant-in-Aid for Scientific Research(A)  Co-Investigator  25H00772 

• 洋上風力発電のためのX-band合成開口レーダの降雨影響把握と利用可能性評価

  Project Period (FY)： 2023/04  -  2028/03  Investigator(s): 竹山優子

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  23K04249 

• Proposal for an offshore WF design suitable for the Japanese coast taking into account the interaction between meteorological and wind turbine aerodynamic fields

  Project Period (FY)： 2022/04  -  2025/03  Investigator(s): 大澤 輝夫

  Grant-in-Aid for Scientific Research(B)  Co-Investigator  23K23286 

• Improving the Reliability of Coastal Wind Statistics Using Synthetic Aperture Radar

  Project Period (FY)： 2019/04  -  2023/03  Investigator(s): Takeyama Yuko

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  19K04856 

  In this study, the accuracy of wind speed estimation in coastal areas of Japan using a synthetic aperture radar (SAR) onboard Sentinel-1 was clarified, and a comparison of multiple methods was conducted for identifying suitable wind direction for the wind speed retrieval.
  The results show that smoothing at 500 m is effective in reducing the effects of speckle noise in SAR images, artificial structures and breaking waves that are common in coastal areas. The results also showed the effectiveness of the wind direction information from the Sentinel-1 OCN product. It means that we can retrieve wind speeds from SAR images without wind direction information from external sources.

• Establishment of a reliable and bankable method for offshore wind resource assessment

  Project Period (FY)： 2017/04  -  2020/03  Investigator(s): Ohsawa Teruo

  Grant-in-Aid for Scientific Research(B)  Co-Investigator  17H03492 

  For offshore wind development, it is necessary to obtain high-quality bankable wind data, by carrying out field observation at a candidate site selected from the nationwide offshore wind resource map. This project conducts a comprehensive wind observation and numerical simulation for the coastal waters off Kamisu, Ibaraki Prefecture, using vertical and scanning Doppler LiDARs as well as meteorological observation equipment on a pier and a buoy, in order to establish a reliable and accurate method for offshore wind resource assessment.

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Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】