摘要
中尺度涡是典型的海洋中尺度现象,开展中尺度涡研究具有重要的科学意义和实用价值,主要利用Okubo(1970)和Weiss(1991)提出的W方法和Nencioli等(2010)提出的几何学算法,针对数值模式输出产品开展了中尺度涡的自动识别与信息提取。结果表明,W方法和几何学方法均能够较好地识别出中尺度涡的位置,进而提取中尺度涡的半径、强度能信息,相比W方法,几何学方法能够识别出更多尺度相对较小的中尺度涡。同时,这两种自动识别方法也存在一定比例的漏判和错判的现象,进一步改进和完善中尺度涡的识别和信息提取算法仍然是必要的。
The meso-scale eddy is a kind of meso-scale oceanic physical phenomena which is important for ocean science and practical applications. W method, put forward by Okubo（1970） and Weiss（1991）, and geometry method, provided by Nencioli et al（2010）, are used to analyze the output data of numerical model to detect the meso-scale eddies and extract the corresponding characteristics. Results show that both W method and geometry method are applicable to detect the position of meso-scale eddies, then the radius and strength of meso-scale eddies can be extracted. Meanwhile, more smallscale eddies can be detected by the geometry method. There are also some eddies which can be detected by naked eyes but missed by W and geometry method. Further improvement of the meso-scale eddy detection algorithm is also necessary.
出处
《海洋通报》
CAS
CSCD
北大核心
2016年第3期294-298,共5页
Marine Science Bulletin
关键词
中尺度涡
识别
W方法
几何学方法
数值产品
meso-scale eddies
detection
W method
geometry method
output data of numerical model
