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    A Lagrangian Method for Extracting Eddy Boundaries in the Red Sea and the Gulf of Aden

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    Thumbnail
    Name:
    Friederici_redseaeddies_2018.pdf
    Size:
    9.945Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
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    Thumbnail
    Name:
    params.pdf
    Size:
    3.107Mb
    Format:
    PDF
    Description:
    Supplemental Material - Parameter Studies: The params file contains further parameter studies, regarding the core selection, integration time and threshold chosen.
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    Thumbnail
    Name:
    video.avi
    Size:
    17.25Mb
    Format:
    video/vnd.avi
    Description:
    Supplementary Material - Video: The video summarizes the problem of Red Sea eddy shape extraction visually. Related methods are judged by the ability to work automatically and produce mass-coherent results. Our method is quickly summarized. Then, all time slices are shown wth the different core lines, our error measurement (E_c) and the resulting boundaries.
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    Type
    Conference Paper
    Authors
    Friederici, Anke
    Toye, Habib
    Hoteit, Ibrahim cc
    Weinkauf, Tino
    Theisel, Holger
    Hadwiger, Markus cc
    KAUST Department
    Applied Mathematics and Computational Science Program
    Computer Science Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Earth Fluid Modeling and Prediction Group
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Visual Computing Center (VCC)
    Date
    2019-09-05
    Online Publication Date
    2019-09-05
    Print Publication Date
    2018-10
    Permanent link to this record
    http://hdl.handle.net/10754/656836
    
    Metadata
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    Abstract
    Mesoscale ocean eddies play a major role for both the intermixing of water and the transport of biological mass. This makes the identification and tracking of their shape, location and deformation over time highly important for a number of applications. While eddies maintain a roughly circular shape in the free ocean, the narrow basins of the Red Sea and Gulf of Aden lead to the formation of irregular eddy shapes that existing methods struggle to identify. We propose the following model: Inside an eddy, particles rotate around a common core and thereby remain at a constant distance under a certain parametrization. The transition to the more unpredictable flow on the outside can thus be identified as the eddy boundary. We apply this algorithm on a realistic simulation of the Red Sea circulation, where we are able to identify the shape of irregular eddies robustly and more coherently than previous methods. We visualize the eddies as tubes in space-time to enable the analysis of their movement and deformation over several weeks.
    Citation
    Friederici, A., Mahamadou Kele, H. T., Hoteit, I., Weinkauf, T., Theisel, H., & Hadwiger, M. (2018). A Lagrangian Method for Extracting Eddy Boundaries in the Red Sea and the Gulf of Aden. 2018 IEEE Scientific Visualization Conference (SciVis). doi:10.1109/scivis.2018.8823600
    Sponsors
    This work was supported in part by funding from King Abdullah University of Science and Technology (KAUST).
    Publisher
    IEEE
    Conference/Event name
    2018 IEEE Scientific Visualization Conference (SciVis)
    DOI
    10.1109/scivis.2018.8823600
    Additional Links
    https://ieeexplore.ieee.org/document/8823600/
    ae974a485f413a2113503eed53cd6c53
    10.1109/scivis.2018.8823600
    Scopus Count
    Collections
    Conference Papers; Applied Mathematics and Computational Science Program; Physical Science and Engineering (PSE) Division; Computer Science Program; Earth Science and Engineering Program; Visual Computing Center (VCC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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