A Lagrangian Method for Extracting Eddy Boundaries in the Red Sea and the Gulf of Aden
Name:
Friederici_redseaeddies_2018.pdf
Size:
9.945Mb
Format:
PDF
Description:
Accepted Manuscript
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.
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.
Type
Conference PaperKAUST Department
Applied Mathematics and Computational Science ProgramComputer 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
2019-09-05Online Publication Date
2019-09-05Print Publication Date
2018-10Permanent link to this record
http://hdl.handle.net/10754/656836
Metadata
Show full item recordAbstract
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.2018.8823600Sponsors
This work was supported in part by funding from King Abdullah University of Science and Technology (KAUST).Publisher
IEEEConference/Event name
2018 IEEE Scientific Visualization Conference (SciVis)Additional Links
https://ieeexplore.ieee.org/document/8823600/ae974a485f413a2113503eed53cd6c53
10.1109/scivis.2018.8823600