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- W2499333508 abstract "Abstract This paper presents a fast and robust mesh generation procedure that is able to generate meshes of the earth system (ocean and continent) in matters of seconds. Our algorithm takes as input a standard shape-file i.e. geospatial vector data format for geographic information system (GIS) software. The input is initially coarsened in order to automatically remove unwanted channels that are under a desired resolution. A valid non-overlapping 1D mesh is then created on the sphere using the Euclidean coordinates system x , y , z . A modified Delaunay kernel is then proposed that enables to generate meshes on the sphere in a straightforward manner without parametrization. One of the main difficulty in dealing with geographical data is the over-sampled nature of coastline rep- resentations. We propose here an algorithm that automatically unrefines coastline data. Small features are automatically removed while always keeping a valid (non-overlapping) geometrical representation of the domain. A Delaunay refinement procedure is subsequently applied to the domain. The refinement scheme is also multi-threaded at a fine grain level, allowing to generate about a million points per second on 8 threads. Examples of meshes of the Baltic sea as well as of the global ocean are presented." @default.
- W2499333508 created "2016-08-23" @default.
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- W2499333508 date "2016-01-01" @default.
- W2499333508 modified "2023-09-26" @default.
- W2499333508 title "Fast and Robust Mesh Generation on the Sphere – Application to Coastal Domains" @default.
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- W2499333508 doi "https://doi.org/10.1016/j.proeng.2016.11.011" @default.
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