摘要
针对台风过程中海面响应问题,以2012年强台风"玛娃"为例,利用NCEP风场再分析资料和HYCOM流场数据,绘制台风过程中大气风场及对应的海面流场图,分析在台风作用下,海洋涡旋生成、发展和消亡的特点,研究此过程中海面旋涡的中心位置、尺度范围、涡旋结构和涡旋强度等特征.结果表明,随着热带风暴增强为台风,海面涡旋尺度和强度逐渐增强,海面形成完整的气旋式结构,涡旋右侧流速较左侧大,海面涡旋中心位置落后于台风中心一定距离,而且海面涡旋为辐散型涡旋结构,表层水流由内向外流动.
In view of the problem of the response of sea surface to a typhoon,taking the strong typhoon of＂Mawa＂in 2012 as an example,and using the NCEP reanalysis wind field data and HYCOM flow field data,the atmospheric wind field and corresponding flow field on the sea surface were drawn,the generation,development,and dying out of ocean vortices were analyzed under the action of typhoon＂Mawa＂,and the central position,scale range,structure,and strength of the sea surface vortex were analyzed.The results show that when the tropical storm is strengthened into a typhoon,the scale and strength of the sea surface vortex increases,and an entire cyclone-type structure is formed on the sea surface.The velocities on the right of the vortex are larger than those on the left,and the centre of the sea surface vortex lags behind the typhoon centre.The sea surface vortex shows a divergence-type structure,with the surface water flowing from inside to outside.
出处
《淮海工学院学报（自然科学版）》
CAS
2016年第4期82-88,共7页
Journal of Huaihai Institute of Technology:Natural Sciences Edition
基金
国家自然科学基金资助项目(41276033)
江苏高校优势学科建设工程资助项目(PAPD)
江苏省大学生实践创新训练计划项目(201410300055
201510300052)
南京信息工程大学教学改革重点项目(2015JY015)
关键词
台风
海面涡旋
流速场
涡度
typhoon
sea surface vortex
velocity field
vorticity
