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Distribution of Surface Dissolved Oxygen Fronts in China's Marginal Seas

文献类型：期刊论文

作者Ping, Bo1; Meng, Yunshan4; Su, Fenzhen5; Xue, Cunjin2; Li, Zhi3; Yuan, Zheng3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
出版日期2025-10-04
卷号130期号:10页码:e2025JC022789
关键词dissolved oxygen (DO) DO retrieval front detection China's marginal seas
ISSN号2169-9275
DOI10.1029/2025JC022789
产权排序3
文献子类Article
英文摘要Currently, studies on the spatiotemporal distribution of dissolved oxygen (DO) fronts and their relationships with physical fronts remain limited. This study aims to investigate the spatiotemporal characteristics of DO fronts in China's marginal seas. DO values were first estimated using machine learning (ML) algorithms. Subsequently, DO fronts were identified by integrating gradient-based and histogram-based methods. Then, front frequency and average gradient were computed and integrated to analyze the spatiotemporal characteristics of DO fronts. Furthermore, the coupling probabilities between coastal DO fronts and the corresponding fronts of sea surface temperature (SST), sea surface salinity (SSS), and sea surface chlorophyll-a (SCHL), as well as the correlations in terms of front length and offshore distance, were investigated. Generally, the retrieved root mean square errors and mean absolute percentage error values were mostly below 8 mu mol/kg and 2.1%, respectively, across various ML methods, while the correlation coefficients consistently exceeded 0.98. Seasonal analysis revealed that DO fronts were relatively well-structured in spring. In summer, except for the Korean coastal DO fronts and the Taiwan Strait front, most DO fronts exhibited reduced intensity and stability compared to spring. DO fronts remained weak in both intensity and stability throughout autumn. However, in winter, DO fronts became more well-defined, with most reaching peak intensity and stability. Additionally, coastal DO front lengths correlated more strongly with SST front lengths than with SSS and SCHL front lengths. Moreover, the offshore distances of DO fronts were mainly influenced by SST fronts during spring and winter, while SCHL fronts had a slightly greater influence in summer and autumn.
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WOS关键词EDGE-DETECTION ; EAST CHINA ; OCEANIC FRONTS ; TEMPERATURE ; ALGORITHM ; CLASSIFICATION ; VARIABILITY ; YELLOW ; IMAGES ; BOHAI
WOS研究方向Oceanography
语种英语
WOS记录号WOS:001587528400001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.igsnrr.ac.cn/handle/311030/217438]  
专题资源与环境信息系统国家重点实验室_外文论文
通讯作者Xue, Cunjin
作者单位1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China;
2.Chinese Acad Sci, Aerosp Informat Res Inst, Beijing, Peoples R China;
3.China Ctr Resources Satellite Data & Applicat, Beijing, Peoples R China
4.Natl Marine Data & Informat Serv, Tianjin, Peoples R China;
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Ping, Bo,Meng, Yunshan,Su, Fenzhen,et al. Distribution of Surface Dissolved Oxygen Fronts in China's Marginal Seas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2025,130(10):e2025JC022789.
APA Ping, Bo,Meng, Yunshan,Su, Fenzhen,Xue, Cunjin,Li, Zhi,&Yuan, Zheng.(2025).Distribution of Surface Dissolved Oxygen Fronts in China's Marginal Seas.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,130(10),e2025JC022789.
MLA Ping, Bo,et al."Distribution of Surface Dissolved Oxygen Fronts in China's Marginal Seas".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 130.10(2025):e2025JC022789.

入库方式： OAI收割

来源：地理科学与资源研究所

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