針對應用海洋數值模式來模擬區域性的水動力行為如潮汐或暴潮，模式的開邊界條件及表面驅動力條件是用以驅動數值模式的必要條件。本文建立一個可以用來模擬潮汐及暴潮的海洋數值模式系統，此數值模式系統的開邊界條件直接與全球潮汐模式結合，可以方便的模擬全球任何一個計算區域的潮汐資料。當引用外部表面驅動力邊界條件如風場及氣壓場來模擬風驅流或暴潮時，取得的風場及氣壓場之時間步長及空間步長勢必得先進行內插以匹配海洋模式的配置。其中，颱風為特殊且強烈的天氣系統，乃造成海岸災害的一個主要因素。然而在使用傳統線性內插法進行風場及氣壓場內插時，往往會破壞颱風的架構，於模式計算區域中形成二個較弱且以消失/出現的型態移動。為解決此一問題，本文發展一套可以考慮颱風移動特性的內插方法(pathway interpolation scheme)，且所需計算量與傳統直接內插方法相近。
實際應用之前，本文設置一系列的數值試驗來測試模式的敏感性並決定模式系統中所需使用的設置條件。從試驗結果可以看出，即使單純的僅計算天文潮的部份，模式使用二維與三維的計算方式在台灣海峽中可以產生的差異達50公分。此外，考慮潮汐與暴潮分開計算或合併計算時所產生的差異亦可佔最大暴潮偏差量的12%。最後，測試本文所提出的考慮颱風移動特性的內插方法，結果顯示不論是應用在北海(North Sea)的暴風(Storm) 或是亞洲的颱風(Typhoon)，本文所提出的考慮颱風移動特性的內插方法均可以有效的改善傳統線性內插法後風場及氣壓場的不合理現象，且實際應用於推算暴潮時，亦可大幅降低使用傳統內插方法所產生的誤差。
模式經測試完成之後，實際模擬潮波進入台灣海峽之後，受台灣海峽的地形影響所產生的特性。從文獻上可知，M2半日潮的振幅在台灣海峽中段達最大的原因乃與入、反射疊加所形成的駐波現象有關。本文進一步從M2半日潮的相位分佈特性來討論台灣海峽的M2分潮組成型態。結果發現，M2分潮的組成並非單純由入、反射所形成，勢必存在著一個向北傳遞的M2分潮來源由台灣海峽南端傳入台灣海峽之中。從實測資料與模式模擬結果均可發現此一M2分潮來源的存在。此外，本文亦藉由分析淺水分潮的特性做進一步的討論。由於淺水分潮主要在台灣海峽內因為水深變淺而形成，因此，在台灣海峽內的M4淺水分潮可以視為以Kelvin wave的形式入反射疊加且形成駐波現象，進一步由M4的相位分佈，可以發現M4淺水分潮在台灣峽內有二處位置形成無潮點。
最後在暴潮的模擬上，本文將九大類型的颱風各選定一個颱風案例來進行暴潮的模擬。從這九個案例討論台灣沿岸的颱風暴潮的特性，分析結果顯示台灣海岸因為颱風所引起的暴潮偏差量的最大值均在颱風中心附近，並且以倒氣壓計效應為主。

The open lateral boundaries and surface boundary fields are the necessary forcing input to the numerical ocean model. A numerical model system has been integrated to simulate the tidally and meteorologically driven hydrodynamics in a very conveniently way to configure for any region of the earth. The hydrodynamics are driven by global astronomical tidal model at the open lateral boundaries. At the surface boundary, if wind and air pressure fields are prescribed, the data downscaling process is necessary to generate the same grid size and time step as ocean model. Typhoons, strong wind and low air pressure, is the major factor to cause the coastal hazardous. However, the traditional linear interpolate scheme of meteorological data downscaling will destroy the structure of typhoon. After applying the traditional linear interpolation to the data downscaling, the typhoon should go as disappear/appear. In order to avoid this situation, a storm pathway downscaling scheme is proposed to interpolate meteorological fields to fit the computational grid system.
In order to validate the present model system, a series of numerical experiments were adopted to demonstrate the effect of the model results by downscaling method, two or three dimensional simulations and the interaction of tide and storm surge. The experimental results show the maximum tidal level difference over Taiwan Strait between two dimensional runs and three dimensional runs can be about 50 cm. The interaction of tide and storm surge is about 12 % of maximum storm surge deviations. Final, the storm event in North Sea and typhoon event over Taiwan water are used to exam the presented downscaling method. The results show that the presented downscaling method could downscale the meteorological fields in keeping with physical sense.
The validated model system is used to simulate the tidal propagation in Taiwan Strait. The references indicate that the amplitude of semidiurnal tide M2 has maximum values in the middle of Taiwan Strait is due to consist of incident and reflected M2 tides. In present study, the characteristics of co-phase distribution of M2 tide in Taiwan Strait is used to discuss consists of M2 tide. We found that, there must exist a third M2 source tide propagated from south of Taiwan Strait into Taiwan Strait then the co-phase of consist of incident, reflected and northward propagated M2 tides will satisfy the measurements along Taiwan Coast. Furthermore, the shallow water constituents’ results are used to discuss the tidal propagation in the Taiwan Strait. Due to the shallow water constituents are generated inside the Taiwan Strait, the constituent M4 is only consist of incident and reflected Kelvin waves. Without the third source of M4 constituent, the co-phase of M4 over Taiwan Strait shows two amphidromic points clearly.
The model system is also used to simulate the storm surges over Taiwan water. Nine typhoon cases corresponding to nine tracks have been selected to simulate the storm surge deviations around the coastal of Taiwan. The maximum storm surge deviations around the coastal of Taiwan during each typhoon case are then represents.

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