本文選題：南海　切入點：SWAN　出處：《中國海洋大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：南海海域波浪場的變化是當(dāng)今諸多學(xué)者海洋研究的焦點。近幾十年，南海海域海洋災(zāi)害的發(fā)生呈逐年增長的趨勢，也成為制約南海經(jīng)濟(jì)發(fā)展的關(guān)鍵因素。研究南海的波浪場，對海上航運(yùn)、海上軍事以及能源的開發(fā)利用顯得尤為重要。 本文利用1986年1月至2005年12月由WRF模式構(gòu)造的高時空分辨率的再分析風(fēng)場，運(yùn)用目前國際比較先進(jìn)的第三代海浪模式SWAN（SimulatingWaves Nearshore）40.85，對南海海域的波浪場進(jìn)行長時間序列的數(shù)值模擬。文章主要分析了南海波浪場的變化，其中包括有效波高的季節(jié)變化和年際變化、多年一遇重現(xiàn)期極值以及波浪能的季節(jié)變化和年際變化。 由于受冬季季風(fēng)的影響，南海有效波高在冬季達(dá)到了最大值，最小值則出現(xiàn)在季風(fēng)轉(zhuǎn)換的春季，在南海有效波高的分布呈現(xiàn)東北-西南走向；從多年平均有效波高的分布來看，最大值發(fā)生在南海的中部海域，有效波高分布與季節(jié)性分布趨勢一致，亦呈現(xiàn)出東北-西南走向；并且通過與衛(wèi)星高度計數(shù)據(jù)進(jìn)行對比驗證，顯示模擬結(jié)果與實測數(shù)據(jù)吻合較好。 在本文中選用P-Ⅲ分布曲線對南海海域的有效波高和平均周期的重現(xiàn)期極值進(jìn)行了估計，結(jié)果顯示：P-Ⅲ型分布曲線對有效波高和平均周期的擬合效果較好。研究多年一遇重現(xiàn)期的極值對于海上航行、港口建設(shè)以及漁業(yè)捕撈都要非常重要的意義。 南海蘊(yùn)藏有豐富的波浪能資源，，這對于在南海建立波浪能電站十分有優(yōu)勢。通過對南海波浪能的分析，表明南海波浪能的儲量比傳統(tǒng)的估計要大的多。能流密度的最大值出現(xiàn)在冬季，而且具有比較高的穩(wěn)定性，除此之外，通過計算能流密度能級頻率發(fā)現(xiàn)，在南海，能流密度大于6kW/m的頻率達(dá)到了80%以上，且高頻率帶的分布呈現(xiàn)東北-西南走向，這與波浪能的大致區(qū)分布相一致。 南海海域是臺風(fēng)的頻發(fā)地，研究臺風(fēng)過程波浪場的變化顯得十分重要。在本文中選取了編號為0814的黑格比臺風(fēng)作為研究個例。將模擬結(jié)果與實測數(shù)據(jù)進(jìn)行對比驗證，發(fā)現(xiàn)模擬結(jié)果與實測值吻合比較好。而且整個浪場的變化再現(xiàn)了臺風(fēng)的移動的過程。 本文采用SWAN海浪模式對南海海域進(jìn)行數(shù)值模擬，通過與衛(wèi)星高度計數(shù)據(jù)以及實測數(shù)據(jù)進(jìn)行對比發(fā)現(xiàn)：模擬效果較好，說明SWAN模式可以很好地模擬南海海域的波浪場。
[Abstract]:The variation of the wave field in the South China Sea is the focus of many scholars' marine research. In recent decades, the occurrence of marine disasters in the South China Sea has been increasing year by year, which has also become the key factor restricting the economic development of the South China Sea. The development and utilization of maritime navigation, maritime military and energy are particularly important. In this paper, the high spatial and temporal resolution reanalysis wind field constructed by WRF model from January 1986 to December 2005 is used. In this paper, the numerical simulation of the wave field in the South China Sea over a long period of time is carried out by using the advanced third generation wave model SWAN(SimulatingWaves Nearshorezhike 40.85. The variation of the wave field in the South China Sea is mainly analyzed, including the seasonal variation and the interannual variation of the effective wave height. The seasonal and interannual variations of the maximum value and wave energy in the recurrence period of many years. Due to the influence of the winter monsoon, the effective wave height in the South China Sea reaches the maximum in winter, and the minimum occurs in the spring of the monsoon transition, and the distribution of the effective wave height in the South China Sea appears northeast to southwest strike. From the distribution of the annual mean effective wave height, the maximum occurred in the central sea area of the South China Sea. The effective wave height distribution is consistent with the seasonal distribution trend, and also shows the northeast to southwest trend, and is verified by comparing with the satellite altimeter data. The simulation results are in good agreement with the measured data. In this paper, the P- 鈪

本文編號：1576331