【摘要】：近年來，臺風(fēng)浪的研究始終倍受關(guān)注，近岸區(qū)的波浪狀況更是與人們的生活息息相關(guān)。利用SW譜波浪模型，建立了浙江省海域的臺風(fēng)浪計(jì)算模型。對模型風(fēng)場和浪場的源項(xiàng)參數(shù)進(jìn)行試驗(yàn)和取值，討論白帽耗散、底摩阻和波浪破碎等源項(xiàng)參數(shù)對模型的影響程度。本文利用實(shí)測資料分別對浙江省海域的臺風(fēng)風(fēng)場和臺風(fēng)浪模型進(jìn)行驗(yàn)證。將登陸浙江省的臺風(fēng)分成三類，并利用驗(yàn)證后的浙江省臺風(fēng)浪模型對三類臺風(fēng)進(jìn)行數(shù)值模擬。本文重點(diǎn)研究浙江省近岸臺風(fēng)浪的傳播和演化過程。通過分析臺風(fēng)浪的傳播和演變特點(diǎn)，得出以下結(jié)論： （1）本文建立的浙江省海域的臺風(fēng)浪模型，在研究浙江省附近海域的臺風(fēng)浪特征具有較好的適用性。 （2）在SW模型計(jì)算中，，白帽耗散項(xiàng)對有效波高的影響效果明顯，底摩阻系數(shù)對有效波高值仍有較大影響，波浪破碎作用對模擬結(jié)果影響很小。波浪由深水向淺水傳播時(shí)，會(huì)在海岸附近發(fā)生波浪破碎，因此需要開啟波浪破碎項(xiàng)。 （3）經(jīng)過臺風(fēng)眼中心區(qū)域的點(diǎn)其有效波高經(jīng)歷了4個(gè)階段，分別為升高、降低、再升高和再降低；而不經(jīng)過臺風(fēng)眼中心區(qū)域的點(diǎn)其有效波高的變化規(guī)律為先升高后降低。 （4）在北半球臺風(fēng)前進(jìn)方向右側(cè)的波浪發(fā)展迅速，右側(cè)的有效波高值遠(yuǎn)大于左側(cè)的有效波高值，形成危險(xiǎn)半圈。臺風(fēng)右半圈有效波高相對左半圈增幅的最大值出現(xiàn)在移動(dòng)路徑右側(cè)的十級風(fēng)圈內(nèi)。 （5）臺風(fēng)移動(dòng)路徑上有效波高的最大值出現(xiàn)在臺風(fēng)中心的前眼壁處，而臺風(fēng)風(fēng)眼中心以外區(qū)域有效波高的最大值出現(xiàn)在距離臺風(fēng)中心最近的時(shí)刻。 （6）登陸浙江省的臺風(fēng)引起的臺風(fēng)浪在舟山島E向產(chǎn)生的有效波高最大，而有效波高的最小值在舟山島的N向產(chǎn)生。
[Abstract]:In recent years, the study of typhoon waves has been paid more and more attention, and the wave situation in coastal areas is closely related to people's lives. Based on the SW spectral wave model, the typhoon wave model in Zhejiang Province is established. The source parameters of wind field and wave field are tested and measured, and the influence of source parameters such as white cap dissipation, bottom friction and wave breakage on the model is discussed. In this paper, the typhoon wind field and typhoon wave model in Zhejiang Province are verified by the measured data. The typhoon landing in Zhejiang Province is divided into three types, and the three kinds of typhoons are numerically simulated by using the verified typhoon wave model in Zhejiang Province. This paper focuses on the propagation and evolution of typhoon waves near the coast of Zhejiang Province. By analyzing the characteristics of typhoon wave propagation and evolution, the following conclusions are drawn: (1) the typhoon wave model in Zhejiang Province is established in this paper. In the study of typhoon wave characteristics near Zhejiang Province, it has good applicability. (2) in the calculation of SW model, the effect of white cap dissipation term on effective wave height is obvious, and the bottom friction coefficient still has great influence on effective wave height. Wave breakage has little effect on the simulation results. Wave breaking occurs near the coast when the wave propagates from deep water to shallow water, so it is necessary to open the wave breaking term. (3) the effective wave height of the point passing through the center of the typhoon eye has gone through four stages, which are rising and decreasing, respectively. (4) the wave on the right side of the typhoon's forward direction in the Northern Hemisphere develops rapidly, and the change of the effective wave height does not pass through the central region of the typhoon eye. The effective wave height on the right side is much larger than the effective wave height on the left side, forming a dangerous half circle. The maximum increase of the effective wave height in the right half circle of the typhoon relative to the left half circle appears in the 10-magnitude wind circle on the right side of the moving path. (5) the maximum effective wave height on the moving path of the typhoon appears at the front eye wall of the typhoon center. The maximum effective wave height outside the typhoon eye center appears at the closest moment to the typhoon center. (6) the typhoon wave caused by the typhoon landing in Zhejiang Province is the largest effective wave height in the E-direction of Zhoushan Island. The minimum effective wave height is generated in the N direction of Zhoushan Island.
【學(xué)位授予單位】：大連海洋大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P731.22

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