本文關鍵詞： WRF SWAN 清水灣 風要素 波浪要素　出處：《中國海洋大學》2014年碩士論文　論文類型：學位論文

【摘要】：本文基于區(qū)域氣候模式WRF，采用GRAPES三維變分同化系統(tǒng)，建立了20年再分析南海風場的數(shù)據(jù)集。通過對冬季風、夏季風和臺風個例的對比，驗證了模式結(jié)果的可靠性。通過對再分析數(shù)據(jù)的季節(jié)變化分析顯示，整個清水灣及附近海域風場的季節(jié)變化非常明顯，受制于季風轉(zhuǎn)換。同時由于夏季多受臺風旋轉(zhuǎn)大風風場影響，，在考察此區(qū)域風要素時還需要結(jié)合臺風季節(jié)的多變性�；谧郧短椎臏\水第三代海浪模式SWAN進行了清水灣附近海域波浪場的模擬。清水灣海區(qū)波浪場的季節(jié)變化較大。夏季有效波高大約在0.7米左右，波向主要為南向，波高差別不大，但向東北方向遞增。冬季受東北季風影響，波高最大，為東北向浪，普遍可達2米以上。 研究了2005年第18號臺風“達維”的整個風浪發(fā)展過程�！斑_維”是直接經(jīng)過清水灣附近海域的強烈臺風之一，整個過程中清水灣附近風速最大可達27m/s，風向經(jīng)歷了北—西北—西南—南向的變化。隨著臺風的逼近，清水灣附近波浪波高逐漸增大，波向經(jīng)歷了北—西北—西—西南—南向的變化。在海洋環(huán)境規(guī)劃，海洋預報，海洋工程和軍事活動中都必須要考慮臺風浪的影響。 為全面考察清水灣地區(qū)的波浪狀況，本文還給出外海三個代表性點P1（30米）、P2（35米）、P3（40米）6個方位（ESE,SE,SSE,S,SSW,SW）重現(xiàn)期波浪要素。經(jīng)P-III曲線模擬得到結(jié)論：清水灣強浪向為S至ESE，相對來講SW、SSW方向波浪較弱，越向外海ESE向波浪越強。灣內(nèi)30米水深處50年一遇波高可達6米以上，40米水深處50年一遇波高可達8米以上。
[Abstract]:Based on the regional climate model (WRF) and GRAPES three-dimensional variational assimilation system, a 20-year reanalysis data set of the South China Sea wind field has been established. The comparison of winter monsoon, summer monsoon and typhoon is carried out. The reliability of the model results is verified. The seasonal variation analysis of the reanalysis data shows that the seasonal variation of the wind field in the whole clear Water Bay and its adjacent waters is very obvious. It is restricted by the monsoon transition. At the same time, it is affected by the wind field of typhoon rotation in summer. It is also necessary to combine the variability of typhoon season with the wind elements in this area. Based on the self-nested third generation wave model SWAN, the simulation of wave field near clear water bay is carried out. Seasonal variation of wave field in clear water bay. The summer effective wave height is about 0.7 meters, The wave direction is mainly southward, but the wave height is increasing in the northeast direction, and the wave height is the largest in winter due to the influence of the northeast monsoon, and the wave height is generally more than 2 meters in the northeast direction. The whole process of wind and wave development of Typhoon No. 18 (2005) was studied. "Davi" was one of the strong typhoons passing directly through the waters near clear Water Bay. During the whole process, the maximum wind speed near clear Water Bay can reach 27m / s, and the wind direction has experienced a change from north to northwest to southwest to south. With the approaching of typhoon, the wave wave height near clear water bay increases gradually. The wave direction has undergone a change from north to northwest to west to southwest to south. The influence of typhoon waves must be considered in marine environmental planning, ocean forecast, ocean engineering and military activities. In order to investigate the wave situation in clear Water Bay area, In this paper, the wave elements in the recurrence period of the three representative points P1 ~ (30 m) ~ (P ~ (2 +)) ~ (35) m ~ (3 ~ (3) ~ (40 m)) are also given. The results of P-III curve simulation show that the strong wave direction of clear Water Bay is from S to ESEs, but the wave in SWSSW direction is weaker than that in SWSSW direction, and the results are as follows: (1) the wave direction of clear Water Bay is from S to ESE, but the SWSSW direction is relatively weak. The water depth of 30 meters in the bay can reach 6 meters or more than 40 meters in 50 years, and the wave height can reach more than 8 meters in 50 years.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P732;P731.22

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