南海北部陆丰油气区块风、浪特征研究

Study on the characteristics of wind and waves in the Lufeng oil and gas block in the northern South China Sea

中文关键词:  南海北部  SWAN  海浪模型  风浪特征

英文关键词:Northern South China Sea  SWAN  wave model  wind wave characteristics

中文摘要:

      陆丰海区是广东海域海上清洁能源开发的重要海区，系统性地分析该海域的风浪特征有利于推进陆丰海区海上工程的开展和实施。本文以WRF模拟风场数据作为输入风场，通过SWAN双层嵌套数值模型模拟广东海域2002－2021年连续20年的风浪场。将模拟结果与波浪站、浮标的实测数据进行对比分析，验证模拟结果的精度。根据风场数据资料和模拟结果统计分析了多年广东海域的海表面风场和波浪场的特征以及陆丰油气区块代表点的风浪特征，主要内容包括海表面风场、波浪场的年、季度、月变化特征。分析表明：广东海域的风速季节性变化特征明显，秋冬季为季风期大于春夏季平均风速；多年常风向为NE向，最大风速超过20 m/s。广东海域的波浪条件具有季节性变化特征，在春夏季有效波高平均值远小于秋冬季有效波高的平均值；受南海季风影响，秋冬季有效波高最大超过3 m。

英文摘要:

      Lufeng sea area is an important sea area for the development of marine clean energy in the Guangdong sea area. Systematic analysis of the wind and wave characteristics in this sea area is conducive to promoting the development and implementation of marine projects in the Lufeng sea area. In this paper, the WRF simulated wind field data is used as the input wind field, and the SWAN two-layer nested numerical model is used to simulate the wind wave field in the Guangdong sea area for 20 consecutive years from 2002 to 2021. The simulation results are compared with the measured data of wave stations and buoys to verify the accuracy of the simulation results. According to the wind field data and simulation results, the characteristics of sea surface wind field and wave field in the Guangdong sea area for many years and the characteristics of wind and wave at one representative point in the sea area are statistically analyzed. The main contents include the annual, quarterly and monthly variation characteristics of sea surface wind field and wave field. The analysis shows that the seasonal variation of wind speed in the Guangdong sea area is obvious, and the average wind speed in autumn and winter is greater than that in spring and summer. The wind direction is NE for many years, and the maximum wind speed is more than 20 m / s. The wave conditions in the Guangdong sea area have seasonal variation characteristics. The average value of the significant wave height in spring and summer is much smaller than that in autumn and winter. Affected by the South China Sea monsoon, the maximum effective wave height in autumn and winter is more than 3 m.