基于LAGFD-WAM海浪数值模式的海南万宁近海波浪能资源评估  

Assessment of nearshore wave energy resource of Wanning, Hainan Province by using LAGFD-WAM Wave Model

作　　者：李泽文[1] 周强[1] 杨永增[2] 

机构地区：[1]华能新能源股份有限公司,北京100036 [2]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋预报》2014年第5期13-19,共7页Marine Forecasts

基　　金：国家高技术研究发展计划"863"项目(2013AA09A506)

摘　　要：利用1991—2010年的NCEP再分析风场驱动LAGFD-WAM海浪数值模式,通过数值后报方法,对海南万宁近海海域近20年的波浪场进行了逐时数值模拟,数值模拟结果和实测结果对比的一致性良好。在数值后报数据的基础上计算了万宁近海波浪能流密度和能流密度变异系数,并对其年内变化特点、区域分布特征和稳定性进行了分析。万宁近海年均波浪能流密度3—10 k W/m,属于波浪能资源可利用区和较丰富区。年内各月月均能流密度差别较大,12月波浪能资源最好,5月波浪能资源最差。秋季(9—11月)和冬季(12—2月)月均波浪能流密度分别为5—24 k W/m和6—29 k W/m,春季(3—5月)和夏季(6—8月)分别为3—7 k W/m和1—6 k W/m。地形对波浪能量的辐聚作用明显,受岬角、岛屿、海底陡坡等因素影响,大洲岛、白鞍岛周边、大花角附近及白鞍岛以北部分近岸区域形成波浪能富集区。除9月外,年内其他时段能流密度变异系数都在2.8以下,9月能流密度变异系数在3.0—5.9之间。The third generation spectral wave model,LAGFD-WAM is adopted for the long term hindcasting data for the adjacent sea of Wanning City.The model is driven by the NCEP reanalysis wind data from 1991 to 2010.The model result agrees well with the observational data.Based on the hindcasting data,wave energy density and coefficient of variation （COV） are calculated and the temporal and spatial distributions of the wave are analyzed.This result shows that wave energy is rich in the adjacent sea area of Wanning City.Annual average wave energy flux density is in the range of 3-10 kW/m.The difference of monthly wave energy flux density is great.The richest wave energy occurs in December,and the poorest in May.Wave energy flux density in autumn and winter is 5-24 kW/m and 6-29 kW/m respectively.Wave energy flux density in spring and summer is 3-7 kW/m and 1-6 kW/m respectively.On account of the existence of special sea terrain of islands,headland,and steep seabed,the wave energy in the adjacent area of Dazhou island and Baian island,Dahuajiao headland,and coastal region to the north of Baian island is rich enough.The wave energy flux density variation coefficient is 3.0-5.9 in September,and it is less than 2.8 in other months.

关 键 词：LAGFD-WAM海浪模式 波浪能 资源评估 万宁 

分 类 号：P743.2[天文地球—海洋科学]