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波浪観測データ解析における未解決問題の解法の提案とその適用性に関する研究

解决波浪观测数据分析中未解决问题的方法的提出及其适用性研究

基本信息

批准号：
20H02259
负责人：
橋本典明
金额：
$ 11.15万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2020
资助国家：
日本
起止时间：
2020-04-01 至 2023-03-31
项目状态：
已结题

项目摘要

（１）【現地観測データの整理・解析】令和２年度に鹿島港で実施した２か月間の現地観測（海象計（ＤＷＭ），３つの水圧式波高計（ＰＷ）およびＤＷＭと同等の機能を有する３つの超音波ドップラー流速計（ＡＤＣＰ）を用いた観測）の時系列データを解析し，それらのデータの妥当性および整合性を検討した．（２）【海象計の新しい伝達関数を用いた方向スペクトルの推定精度の検討】現在のＤＷＭでは微小振幅波理論で導かれた伝達関数を利用して方向スペクトルを推定している．本研究では，令和2年度に観測データから伝達関数を推定可能な新しい方法を開発した．さらに様々な波浪条件に対して本方法を用いて伝達関数を推定し，その特性を評価した．そこで令和3年度には，それらの伝達関数を用いて様々な条件下の方向スペクトル解析を行い，本研究で提案した新しい方向スペクトル推定法の精度と安定性を評価した．その結果，本研究で開発した新しい伝達関数の推定法を利用して推定された方向スペクトルは，これまでの推定法で推定される方向スぺクトルよりも安定性に優れており，高い信頼性を有するものと確認された．（３）【水圧変動から水位変動を推定する方法の開発と観測データへの適用】水圧変動のバイスペクトルを用いて水圧変動から水位変動を推定可能な方法を検討した．その結果，本研究では水圧時系列データから水位変動を直接推定する方法ではなく，ニューラルネットワークを利用して，バイコヒーレンスから水面変動と水圧変動の関係を表す伝達関数を推定可能な方法を開発した．また，その伝達関数を用いて水圧変動のスペクトルから水面変動のスペクトルを推定可能な新しい方法を開発した．さらに本方法を現地観測データに適用し，本方法の推定精度と安定性を評価し，その妥当性を確認した．

(1) the order and the annual two-month climate survey (DWM, 3-inch water wave height meter (PW) and equivalent DWM equipment) in Lulu Harbor in 2000 have a series of cycles to analyze the flow rate measurements (ADCP) of ultrasonic waves in the same period. (2) [Walrus statistics show that the number of new walrus statistics shows that the accuracy of the presumption is different from that of the direction of the walrus.] at present, the DWM, the theory of micro-amplitude waves, the number of the data, the use of the direction, the direction, the presumption, the accuracy, the accuracy. It is possible to use a new method to analyze the wave conditions in this method. This method is based on the presumption of the number of miles reached in the year 2. This method is based on the presumption of the number of times of arrival in the year 2. This method is based on the presumption of the number of times of arrival, the number of characteristics, the order of the year and the year of 3, and the number of miles reached in the year 2. Under the condition of the weather, the direction of the wave condition is analyzed. In this study, we propose a new direction to determine the accuracy and stability in this study. the results show that the method of presumption of the number of new errors in this study is based on the presumption of the direction of the fault, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the fault, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the cycle, the method of the presumption of the direction of the fault, the There is a high level of confidence in confirming the failure. (3) [the method of inference of the water level of the water tank is open to use] the method of the estimation of the water level of the water supply is feasible. The result of the experiment shows that the method of direct estimation of the water level in this study is feasible. It is possible to use a new method to determine the number of water surface motions. This method can be used to determine the number of targets on the surface of the water. This method determines the accuracy, stability and appropriateness of the method.