1988—2010年中国海大浪频率及其长期变化趋势  

Frequency of Rough Sea and Its Long-term Trend Analysis in the China Sea from 1988 to 2010

作　　者：郑崇伟[1,2] 林刚[1,2] 邵龙潭[1] 

机构地区：[1]大连理工大学工程力学系,工业装备结构分析国家重点实验室 [2]92538部队气象台

出　　处：《厦门大学学报（自然科学版）》2013年第3期395-399,共5页Journal of Xiamen University：Natural Science

基　　金：国家重点基础研究发展计划(973)项目(2012CB957803)

摘　　要：利用数值模拟海浪数据,对1988—2010年期间中国海的大浪频率及其长期变化趋势进行较为精细化的统计分析.结果表明:1)近23年期间,中国海的大浪频率基本在30%以内,其中渤海、黄海中北部海域、东海西部近岸海域、北部湾、泰国湾的大浪频率在3%以内,高频海域分布于台湾岛以东广阔洋面、南海中部的东北—西南走向海域.2)春季大浪频率为全年最低,由春季至冬季大浪频率整体上是逐渐递增的.冬季大浪频率为全年最高,大值区为吕宋海峡至中南半岛东南海域一线,呈东北—西南走向的带状分布.3)近23年期间,中国海的大浪频率整体上以0.257%a-1的速度显著性逐年线性递增,且变化趋势表现出较大的区域性和季节性差异.4)不同海域大浪频率的变化趋势由不同季节占主导.In this study, the frequency of rough sea and its long-term trend from 1988 to 2010 in the China Sea were analyzed by u- sing simulation wave data. The results show that, 1） during the past 23 years,the frequency of rough sea is below 30% in the China Sea in which Bohai, the north-central of Yellow Sea, the offshore area of the western area of the East China Sea, Beibu Gulf and Thai- land Bay is less than 3 %, high-frequency waters locate in the east of Taiwan Island, the central part of the South China Sea waters a- long from northeast to southwest. 2） The lowest rough sea frequency happens in spring all year round,and generally the frequency would increase from spring to winter gradually. The rough sea frequency reaches its peaks in winter,and areas of high rough sea fre- quency rang from the Luzon Strait to the southeastern sea areas of Indo-China Peninsula, which exhibits a belt distribution from northeast to southwest. 3） The frequency of rough sea in the China Sea has a significant increasing trend of 0. 257% a-1 over the past 23 years,and also shows obviously regional and seasonal differences. 4） Frequency of rough sea is dominated by different seasons in different waters.

关 键 词：中国海 大浪频率 长期变化趋势 区域性差异 季节性差异 主导季节 

分 类 号：P732[天文地球—海洋科学]