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Development of multi-scale ocean-wave coupled model and its engineering application

多尺度海浪耦合模型开发及其工程应用

基本信息

批准号：
17360415
负责人：
WASEDA Takuji
金额：
$ 10.57万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360415/
关键词：
Ocean Waves Third Generation Wave model The Kuroshio GIS 第三世代波浪予測モデル

项目摘要

[Goal of the research]To construct multi-scale ocean-wave coupled model near Japan, for assisting ocean resources and energy development, navigation assistance and prediction and circumvention of dangerous seas. The model outputs, observation and derived products such as the freak wave index will be served via distributed data server system.[Accomplishments]1. Development of multi-scale ocean-wave coupled model and distributed data server systemTriplly nested wave model was developed based on WAVEWATCHIII^<TM> (1 degree Pacific model>> 1/4 degree Japan model>> 1/16 model east of Japan). Five-day forecast includes freak wave index. The outputs are made available for the user via user-friendly data servers (OPeNDAP and various GIS). The forecast model outputs are served through access restricted server. Hind-cast products are available at: http://157.82.253.137/ & 157.82.253.137/las_v7/v6/dataset2. Understanding the fundamental processesThe wave model was improved by introducing a sophis … More ticated numeric of the nonlinear source term (SRIAM). With the improved source term, the wave-current interaction was studied with the coupled model, revealing that the effect of linear focusing due to current was minimal, contrary to the original anticipation, and the effect of wind variation is dominating.3. Engineering applications<Safety navigation of ocean-going ships>: The sea state during the marine accident cases were reanalyzed (1980 Onomichi-maru, 2008 Suwa-maru), and the temporal evolution of the freak wave indices (directional spread, frequency bandwidth and wave steepness) were investigated. From the analysis, the trajectory of the sea state in the parameter space of directional spread and frequency bandwidth turns out to be a useful index of the increased probability of freak wave. Such parameter is useful for warning purposes. Those parameters are served through our data server.<Other applications>: JCOPE reanalysis product was utilized for; safety evaluation of the methane-hydrate drilling platform, selection of suitable sites for ocean current energy production, and to understand the transport process of fish larvae and eggs. Less

[Goal在日本附近建立多尺度海浪耦合模式，为海洋资源和能源开发、助航、预报和规避危险海域提供辅助。模型输出、观测和衍生产品，如畸形波指数，将通过分布式数据服务器系统提供。[成绩]1.多尺度海浪耦合模式及分布式数据服务器系统的开发基于WAVEWATCHIII^开发了三层嵌套海浪模式<TM>（1度太平洋模式>> 1/4度日本模式>> 1/16日本模式）。五天预报包括反常波指数。通过方便用户的数据服务器（OPeNDAP和各种地理信息系统）向用户提供产出。预测模型输出通过访问受限服务器提供。Hind-cast产品可在http://157.82.253.137/和157.82.253.137/las_v7/v6/dataset2上获得。理解基本过程通过引入sophis改进了波模型 ...更多信息非线性源项（SRIAM）的计算数值。在改进源项的基础上，利用波流耦合模型研究了波流相互作用，结果表明，与原来的预期相反，流引起的线性聚焦效应最小，风场变化的影响占主导地位.工程应用<Safety navigation of ocean-going ships>：对1980年尾道丸、2008年Suwa-maru等海上事故中的海况进行了重新分析，研究了异常波指标（方向扩展、频带宽度和波陡）的时间演变。分析表明，海况在方向扩展和频带宽度参数空间中的变化轨迹可以作为畸形波概率增加的一个有用指标。此参数可用于警告目的。这些参数通过我们的数据服务器提供。<Other applications>利用JCOPE再分析产品对甲烷水合物钻井平台进行安全评价，选择合适的海流能生产场地，了解鱼苗和鱼卵的迁移过程。少