数字海洋与水下攻防2024，Vol.7Issue(1)：54-61,8.DOI:10.19838/j.issn.2096-5753.2024.07.007
基于AVISO卫星高度计资料的黑潮表层流轴时空变化特征分析
Analysis of Spatiotemporal Variation Characteristics of the Kuroshio Surface Axis Based on AVISO Satellite Altimeter Data
摘要
Abstract
The Kuroshio is a famous western boundary current of the Pacific Ocean and the main artery of the circulation system of the East China Sea.The hydrological conditions of the East China Sea,the Yellow Sea,and the Bohai Sea in China are basically constrained by the Kuroshio and its branches.Therefore,research on the Kuroshio has received widespread attention from scholars.Based on the AVISO altimeter geostrophic current data,an improved feature line method and maximum gradient method are used to achieve automated detection of the Kuroshio surface current axis.The empirical mode decomposition method is used to decompose the offshore distance sequence of the Kuroshio Current axis,and the self-organizing mapping method is used to classify the Kuroshio Current axis.The results indicate that the Kuroshio Current axis oscillates significantly in the southern waters of Honshu Island and Kyushu Island,while the oscillation amplitude is relatively small in the southern waters of Shikoku Island.In the regions on the south of the Kyushu Island,the Kuroshio axis mainly presents nearshore and straight patterns for more than half of the studied time period,and the"large meandering"state accounts for approximately 35%.关键词
黑潮表层流轴/卫星高度计资料/自动化特征提取Key words
Kuroshio surface axis/satellite altimeter data/automated feature extraction分类
海洋科学引用本文复制引用
庄展鹏,董婷婷..基于AVISO卫星高度计资料的黑潮表层流轴时空变化特征分析[J].数字海洋与水下攻防,2024,7(1):54-61,8.基金项目
国家自然科学基金项目"基于宽刈幅测高资料的东海黑潮两侧亚中尺度过程三维结构特征分析"(42106031) （42106031）
中央级公益性科研院所基本科研业务费专项资金资助项目"层结变化对海洋内部波动生湍流混合的影响"(2020Q04) （2020Q04）
国家自然科学基金"基于海洋表层卫星遥感观测的海洋水下动力环境智能探测方法研究"(62231028). （62231028）
