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A novel identification method for unrevealed mesoscale eddies with transient and weak features-Capricorn Eddies as an example
Zhibing, Li1,2,3; Zhongya, Cai4; Zhiqiang, Liu2; Xiaohua, Wang3,5; Jianyu, Hu6
2022-06-01
Source PublicationRemote Sensing of Environment
ISSN0034-4257
Volume274
Abstract

Traditional eddy detection methods can well identify eddies with long lifespans (usually >4 weeks) and strong hydrographic features. Eddies with shorter lifespans or intermittent features are arduous to detect and might be eliminated or misclassified during the detection. However, these eddies have been reported as a majority of the mesoscale eddies in global oceans. This study developed a novel eddy identification method for those eddies. Different from the traditional eddy detection performed based on a snapshot of observations in the horizontal plane, this novel identification method was developed on the evolution of eddies in the temporal dimension. It efficiently avoids the failure in detecting eddies with inconspicuous features during some stages of their evolutions and also eliminates excessive detection. The developed method was implemented to detect Capricorn Eddies based on 26 years of sea-level anomaly from satellite altimetry. Capricorn Eddies are transient and intermittent phenomena induced as a result of the East Australian Current colliding with the continental shelf edge near the Fraser Island, Australia. Using the new identification method, the characteristics of Capricorn Eddies, including their temporal and spatial scales, intensity preferences and evolution details, were resolved. Remarkable seasonal variations of the Capricorn Eddies were also revealed. Based on these findings, a comprehensive overview of Capricorn Eddies, which is crucial for further understanding the variabilities of regional biogeochemical processes and ocean ecosystems, was provided. The developed method will also provide potential insight into the unrevealed eddies in the global oceans.

KeywordCapricorn Eddies Eddy Identification Interannual Variability
DOI10.1016/j.rse.2022.112981
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences;remote Sensing;imaging Science & Photographic Technology
WOS IDWOS:000798668300002
Scopus ID2-s2.0-85126558662
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
Corresponding AuthorZhiqiang, Liu
Affiliation1.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
2.Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
3.The Sino-Australian Research Consortium for Coastal Management, The University of New South Wales, Canberra, Australia
4.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macau, China
5.School of Science, The University of New South Wales, Canberra, Australia
6.State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
Recommended Citation
GB/T 7714
Zhibing, Li,Zhongya, Cai,Zhiqiang, Liu,et al. A novel identification method for unrevealed mesoscale eddies with transient and weak features-Capricorn Eddies as an example[J]. Remote Sensing of Environment,2022,274.
APA Zhibing, Li,Zhongya, Cai,Zhiqiang, Liu,Xiaohua, Wang,&Jianyu, Hu.(2022).A novel identification method for unrevealed mesoscale eddies with transient and weak features-Capricorn Eddies as an example.Remote Sensing of Environment,274.
MLA Zhibing, Li,et al."A novel identification method for unrevealed mesoscale eddies with transient and weak features-Capricorn Eddies as an example".Remote Sensing of Environment 274(2022).
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