File:World elevation map.png
Original file (21,600 × 10,800 pixels, file size: 71.79 MB, MIME type: image/png)
Captions
Summary
editDescriptionWorld elevation map.png |
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 |
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Licensing
edit- You are free:
- to share – to copy, distribute and transmit the work
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- Under the following conditions:
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:33, 28 July 2023 | 21,600 × 10,800 (71.79 MB) | Avsa (talk | contribs) | Inverted 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 2023 | 21,600 × 10,800 (68.22 MB) | Avsa (talk | contribs) | Uploaded own work with UploadWizard |
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Horizontal resolution | 39.37 dpc |
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Vertical resolution | 39.37 dpc |