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File:World elevation map.png

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Summary

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Description
English: This is an height map of the planet earth at approximately 1.8km per pixel (at the equator). It uses an Equirectangular projection, so it's well suited for usage in mapping software.

It was done by combining two images from Nasa's Blue Marble collection, the [Topography](https://visibleearth.nasa.gov/images/73934/topography) and [Bathymetry](https://visibleearth.nasa.gov/images/73963/bathymetry) maps. These images were made by Jesse Allen, NASA's Earth Observatory, using data from the General Bathymetric Chart of the Oceans (GEBCO) produced by the British Oceanographic Data Centre. These images are, according to their Image use policy [freely available for re-publication or re-use, including commercial purposes](https://visibleearth.nasa.gov/image-use-policy).

Both images were combined over a gray background. The gray is #8f8f8f which was chosen for having a brightness of 56% which is the ration between of sea level between added height the Mt Everest and Mariana Trench. Bathymetry images were added as a Multiply blend, meaning it's subtracted from the sea level and Topography using a Screen Blend meaning it's added.
Date
Source Own work
Author Avsa
Other versions
  • 8 bit alterative version
    8 bit alterative version

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Captions

Height map of planet earth at 2km per pixel

inception

28 July 2023

File history

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Date/TimeThumbnailDimensionsUserComment
current14:33, 28 July 2023Thumbnail for version as of 14:33, 28 July 202321,600 × 10,800 (71.79 MB)AvsaInverted the grey base from a 44% to a 56%: the Mariana Trench is about 2km deeper than Everest is high, so there should be more details on the oceanic bits.
14:10, 28 July 2023Thumbnail for version as of 14:10, 28 July 202321,600 × 10,800 (68.22 MB)AvsaUploaded own work with UploadWizard

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