The three-dimensional composite analysis method of mesoscale eddies in the Philippine Sea based on sound speed profile clustering

IF 2.8 2区生物学 Q1 MARINE & FRESHWATER BIOLOGY

Frontiers in Marine Science Pub Date : 2025-04-29 DOI:10.3389/fmars.2025.1557271

Xingyu Zhou, Qinghong Li, Xiangjun Yu, Gengming Zhang, Yaowei Ma

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Abstract

Traditional composite methods for mesoscale eddies predominantly employ simplistic geographical partitioning, seldom taking into account the variations in mesoscale eddy structures that are jointly influenced by seasonal and regional factors within the area., nor does it consider the issue of approximating mesoscale eddies as elliptical structures. This study combines mesoscale eddy data from satellite altimetry (2007-2022) with Argo profile data captured by eddies to propose a mesoscale eddy composite analysis method based on profile clustering and an elliptical model. This method provides the three-dimensional structures of various types of mesoscale eddies in the Philippine Sea. The results show that the eccentricity of the best-fitting ellipses for mesoscale eddies in the Philippine Sea is predominantly between 0.7 and 0.9, with the orientation of the major axis mostly directed at 80° northeast. Based on sound speed profile clustering, mesoscale eddies are classified into five categories. The composite eddy anomaly structures exhibit a clear correlation with the profile types. Compared to the single mesoscale eddy structure obtained by the traditional mesoscale eddy composite method, this approach accurately composites five typical mesoscale eddy structures in the Philippine Sea, and its elliptical shape is more consistent with actual observational results.

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基于声速剖面聚类的菲律宾海中尺度涡旋三维复合分析方法

传统的中尺度涡旋复合方法主要采用简单的地理划分方法，很少考虑区域内受季节和区域因素共同影响的中尺度涡旋结构变化。，也没有考虑将中尺度涡旋近似为椭圆结构的问题。本文将2007-2022年卫星测高的中尺度涡旋数据与涡旋捕获的Argo剖面数据相结合，提出了一种基于剖面聚类和椭圆模型的中尺度涡旋复合分析方法。该方法提供了菲律宾海各种类型中尺度涡旋的三维结构。结果表明：菲律宾海中尺度涡旋的最佳拟合椭圆偏心率主要在0.7 ~ 0.9之间，长轴方向多指向东北80°；基于声速分布聚类，将中尺度涡旋划分为5类。复合涡旋异常结构与剖面类型有明显的相关性。与传统的中尺度涡复合方法获得的单一中尺度涡结构相比，该方法准确地复合了菲律宾海5个典型的中尺度涡结构，其椭圆形状更符合实际观测结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Marine Science Agricultural and Biological Sciences-Aquatic Science

CiteScore

5.10

自引率

16.20%

发文量

2443

审稿时长

14 weeks

期刊介绍： Frontiers in Marine Science publishes rigorously peer-reviewed research that advances our understanding of all aspects of the environment, biology, ecosystem functioning and human interactions with the oceans. Field Chief Editor Carlos M. Duarte at King Abdullah University of Science and Technology Thuwal is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, policy makers and the public worldwide. With the human population predicted to reach 9 billion people by 2050, it is clear that traditional land resources will not suffice to meet the demand for food or energy, required to support high-quality livelihoods. As a result, the oceans are emerging as a source of untapped assets, with new innovative industries, such as aquaculture, marine biotechnology, marine energy and deep-sea mining growing rapidly under a new era characterized by rapid growth of a blue, ocean-based economy. The sustainability of the blue economy is closely dependent on our knowledge about how to mitigate the impacts of the multiple pressures on the ocean ecosystem associated with the increased scale and diversification of industry operations in the ocean and global human pressures on the environment. Therefore, Frontiers in Marine Science particularly welcomes the communication of research outcomes addressing ocean-based solutions for the emerging challenges, including improved forecasting and observational capacities, understanding biodiversity and ecosystem problems, locally and globally, effective management strategies to maintain ocean health, and an improved capacity to sustainably derive resources from the oceans.