Mike's Notes
The Spilhaus World Ocean in a Square map is an excellent map projection that centres on the seven oceans with distortion of land. It is terrific for understanding ocean circulation.
This map was shared by Huw Griffiths.
The maps below are are by John Nelson of ESRI.
Resources
- https://en.wikipedia.org/wiki/Athelstan_Spilhaus
- https://storymaps.arcgis.com/stories/756bcae18d304a1eac140f19f4d5cb3d
- https://www.esri.com/arcgis-blog/products/arcgis-pro/mapping/spilhaus-more-like-thrillhaus/
- https://www.esri.com/arcgis-blog/author/j_nelson/
- https://www.esri.com/arcgis-blog/products/arcgis-pro/mapping/steal-this-spilhaus-project-for-arcgis-pro-please/
The Spilhaus World Ocean in a Square map
In 1942 Spilhaus tackled the problem of displaying the world's oceans in an unbroken view. He achieved this by carefully selecting antipodal points as the centers for two hemispheric projections. However it wasn't until 1979 that he published maps using continental shorelines as "natural boundaries", including one that has become the typical example of Spilhaus's technique. It uses locations near Hankou in China and Córdoba in Argentina as poles with a cut joining them across the Bering Strait. In 1991, Spilhaus published Atlas of the World illustrated with a large selection of maps having "geophysical boundaries", typically coastlines, in various orientations and for various purposes. He published several other papers and articles on the topic.
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