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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25447

Title: On the recovery of surface wave by pressure transfer function
Authors: Cheng-Han Tsai;Min-Chih Huang;Fu-Ji Young;Yin-Chern Lin;Hsien-Wen Li
Contributors: NTOU:Department of Marine Environmental Informatics
Keywords: Frequency parameter;Submergence parameter;Acoustic wave gauge
Date: 2005-07
Issue Date: 2011-10-20T08:23:15Z
Publisher: Ocean Engineering
Abstract: abstract:Except the commonly selected pressure transfer function derived from the linear wave theory, a previous study on the pressure transfer function for recovering surface wave from underwater pressure transducer suggested that the pressure transfer function is a function of frequency parameter only. With careful analysis, this study showed that the pressure transfer function should include a transducer submergence parameter as that given by the linear theory. It was found that the previously suggested empirical formula should be restricted to measurements with the pressure transducer close to the surface; otherwise overestimation of wave height would result. Field measurements were carried out with an acoustic wave gauge and a synchronized pressure transducer located at various depths with submergence parameter close to 1 (near the sea floor). It was shown that the previous one-parameter empirical formula might overestimate the significant wave height by more than 30%. This study found that with deep-water wave bursts excluded, the transfer function based on the linear wave theory provided a fairly good estimation on the significant wave heights, with an average deviation of 3.6%.
Relation: 32(10), pp.1247–1259
URI: http://ntour.ntou.edu.tw/handle/987654321/25447
Appears in Collections:[海洋環境資訊系] 期刊論文

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