A Study of the Joint Distribution of Wave Heights and Periods of Non-Gaussian Water Waves

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簡歷

基本資料

Project title

Code/計畫編號

NSC89-2611-E019-030

Translated Name/計畫中文名

非高斯波浪的波高-週期聯合分佈之研究

Project Coordinator/計畫主持人

Deng-How Tsaur

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=493000

Year

2000

Start date/計畫起

01-08-1999

Expected Completion/計畫迄

31-07-2000

Bugetid/研究經費

225千元

ResearchField/研究領域

土木水利工程

本研究採用 Gram-Charlien 級數分佈作為非高斯水位分佈的機率密度函數，以及採用Pierson-Moskowitz頻譜作為波浪水位能譜，然後模擬出具非高斯統計特性的隨機波浪，並探討歪度(Skewness)及尖度(Kurtosis)等兩非高斯統計特性，對波浪的波高一週期聯合分佈，及波高與週期相關係數之影響。本研究的結果顯示，波高一週期的聯合分佈均會受歪度及尖度影響，而波高與週期的相關係數會隨歪度絕對值及尖度值之變大而減小。 In this study, a numerical simulation method is used to simulate the non-Gaussian random waves. The Gram-Charlier series and the Pierson-Moskowitz spectral model are adopted for the non-Gaussian distribution and for target spectrum, respectively. Then we investigate the effects of the non-Gaussian properties, the skewness and kurtosis, on the joint probability density function (JPDF) and the correlation coefficient of wave heights and periods. The final results of this study show that the JPDF effected by the skewness and kurtosis, and as the absolute skewnees and kurtorsis increase, the correlation coefficient will decrease.

Keyword(s)

非高斯波浪
波高
週期
聯合分佈函數
Non-gaussian water wave
Wave heights
Wave periods
Joint probability density function

DSpace CRIS

A Study of the Joint Distribution of Wave Heights and Periods of Non-Gaussian Water Waves

基本資料

Description