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Published 20 hours ago • verified publisher icon der-stefan

Suggestion: seabed topography

Open c933103 opened this issue 5 years ago • 3 comments

It would be nice if OpenTopoMap can display underwater contour lines in sea/ocean/etc., and use different shades of color for different water depth

c933103 avatar Jan 19 '20 21:01 c933103

There are bathymetry data for the oceans in a ~450m grid from the NASA: https://visibleearth.nasa.gov/images/73963/bathymetry That is enough for shading the oceans in Zoom 0-12 (or 14?), but not for contour lines. For lakes I think there are no free elevation data (we use SRTM and the satellite didn't see under water)

max-dn avatar Jan 26 '20 09:01 max-dn

What about the GEBCO "The General Bathymetric Chart of the Oceans"? They said their grid data have been placed in public domain.

c933103 avatar Jan 26 '20 12:01 c933103

GEBCO is a 30-arcsec-grid, so it's about 900m. I think it's enought for low zoom levels and it could be pretty,if you can design the border from river mouthes and lagoons to the sea without changing colour.

max-dn avatar Jan 28 '20 17:01 max-dn