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  本文關鍵詞：大洋東西岸波高與周期的關系研究　出處：《中國海洋大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： ERA-40海浪資料 波齡 波高 周期

【摘要】：本文利用ECMWF ERA-40再分析波浪數(shù)據(jù)，來計算波齡，無因次波高以及無因次周期。把南北太平洋東西岸劃分了4個區(qū)域，對連續(xù)3年的各區(qū)域的無因次波高與無因次周期進行計算，研究其波浪場無因次波高與無因次周期的關系，并比較大洋東西岸的區(qū)別，發(fā)現(xiàn)無因次波高與周期滿足良好的相關性，不限于風浪情況。之后根據(jù)無因次周期與波齡的范圍，將全部波浪數(shù)據(jù)劃分為不同區(qū)間，按照Toba3/2指數(shù)率的形式計算各個區(qū)間的系數(shù)，以此研究其整體的變化規(guī)律與異同，之后結合上文對無因次周期與波齡的關系進行研究，，發(fā)現(xiàn)這兩種劃分方式的不同區(qū)間的范圍有一定的重疊。之后結合上文的研究，對無因次周期與無因次波高的關系進行簡化與整合，計算出了他們的關系，實質是將全部波浪數(shù)據(jù)劃分為兩段進行計算，給出了合理的解釋，并比較其在大洋東西岸的區(qū)別。之后基于趙棟梁的3/5定律，對無因次波高與波齡的關系進行研究，采用上文類似的方式進行計算，可以發(fā)現(xiàn)計算結果有了一定的優(yōu)化。之后比較不同的無因次化的方式的區(qū)別，發(fā)現(xiàn)在計算波齡與無因次量之間的關系時，應均采用10米風速或摩擦風速，這樣計算才處于一個量級使得比較準確。文章的最后采用NDBC的浮標數(shù)據(jù)對上文的研究內容進行驗證與研究，發(fā)現(xiàn)兩者的計算結果有一定差異，對此分析其可能的原因：首先，數(shù)據(jù)來源本身導致的數(shù)據(jù)差異；其次數(shù)據(jù)來源帶來的誤差引起的。并且發(fā)現(xiàn)，雖然不同的數(shù)據(jù)來源計算的無因次波高與無因次周期的關系的數(shù)值不同，整體大致規(guī)律是一致的，并且采用同一來源的數(shù)據(jù)進行計算的結果都是一致的，具有普適性，并且可以確定，通過簡單的換算，就可以將不同數(shù)據(jù)來源的計算結果聯(lián)系到一起。
[Abstract]:In this paper, using the ECMWF ERA-40 reanalysis data to calculate the wave, wave age, dimensionless wave height and dimensionless period. The north and South Pacific coasts are divided into 4 regions, dimensionless wave height on each region for 3 consecutive years, and the dimensionless period for calculation, study on the relationship between dimensionless wave height and dimensionless cycle of the wave field and compare the ocean shore, what difference, found dimensionless wave height and period to meet the good correlation, not limited to waves. According to the range of dimensionless period and wave age, all wave data is divided into different intervals, each interval coefficient is calculated according to the Toba3 /2 index form, in order to study the changes of the overall the similarities and differences, after the combination of the above to study the relationship between the dimensionless period and wave age, found the two division of different ranges have some overlap. After the combination of the above. Study on the relationship between dimensionless cycle and dimensionless height of simplification and integration, the relationship between them is the essence of the calculation, all wave data is divided into two sections to calculate, given a reasonable explanation, and compare the difference between the East and west coasts. In the ocean after 3/5 Zhao Dongliang's law based on the study on the relationship between the dimensionless wave height and wave age, using the above similar way can be found to calculate, calculation results have certain optimization. After comparing the different dimensionless way difference, found in the relationship between the calculated wave age and dimensionless quantity, should adopt 10 m wind speed or friction speed, this calculation it is an order of magnitude to make more accurate. Finally, using NDBC buoy data on the above research content of verification and research, found that the calculation results have certain differences, it analyzes the possible reasons First, the data itself leads to differences in data sources; secondly bring errors caused by the data source. And it is found that although the numerical relationship between dimensionless wave height calculation of different data sources and the dimensionless cycle is different, is consistent with overall rule, and using the same source data were calculated and the results are consistent the universality, and can be determined by a simple conversion, can be calculated in different data sources the results together.

【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】：P731.22

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本文編號：1359311