斯里兰卡汉班托塔港附近海域的 波浪特征模拟分析.

Sri Lanka is located in the northern part of the Indian Ocean, experiencing Northeast monsoon and Southwest monsoon every year. Through wave observation, a long period wave mixing with wind wave and swell was found in nearby sea. Based on the wave situation in this area, the data of meteorological and hodrological reanalysis database was used as the input condition, the relevant charts were used as the topographic condition, and the MIKE 21 SW model was used to calculate the waves in nearby sea of Hambantota Port. According to different input conditions, three modes which are the ERA -interiam,ERA5, and the mixed waves of wind sea and swell ERA5 (ERA-Is, ERA-IIs, ERA-IId) were considered in wave calculation. The calculated results were compared with the observed results, the results show that the the fitting between the model value and observed value of effective wave height is relatively close. ERA-Is and ERA-IIs have slightly better similarity performance in mean wave period, ERA-IId had much better similarity performance in peak wave period. With large swell and small wind wave co -existence condition, ratio of peak wave period and mean wave period is higher than typical J spectrum wave. The traditional J spectrum method (ERA-Is, ERA-IIs) underestimates the wave energy, and ERA-IId takes both wind wave and swell into account, resulting a more precise description on local wave. [ABSTRACT FROM AUTHOR]