File:Lake Superior bathymetry map, deepest point, trenches 2.png

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Summary

Description
English: Lake Superior eastern part bathymetric relief map contoured with interval 25 m (100 m with thicker lines). The deepest point is marked with "×". For land the vertical datum is sea level, for bathymetry low water datum of the lake.

According to NGDC information, Lake Superior data this map is based on are incomplete.

The map was created using the Generic Mapping Tools, GMT, version 5.1.1.
Date
Source

Own work using: the following Public Domain datasets (grids):

  • Great Lakes Bathymetry from National Geophysical Data Center http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html. Credits:
    National Geophysical Data Center, 1999. Bathymetry of Lake Superior. National Geophysical Data Center, NOAA. [access date: 2015-03-23].
    (the general reference to NGDC because this lake was never published, compilation of Great Lakes Bathymetry at NGDC has been suspended).
  • GLOBE http://www.ngdc.noaa.gov/mgg/topo/gltiles.html - land part of this map. Credits:
    National Geophysical Data Center, 1999. Global Land One-kilometer Base Elevation (GLOBE) v.1. Hastings, D. and P.K. Dunbar. National Geophysical Data Center, NOAA. doi:10.7289/V52R3PMS [access date: 2015-03-16].

The coordinates of deepest point are taken from the NOAA Great Lakes Environmental Research Laboratory webpage (www.glerl.noaa.gov/, kml file Google Earth Great Lakes Tour).
The contours are generated by the GMT program, not downloaded from the NGDC website because they are not available for Lake Superior.
The color palette of the depth scale was made to be more or less similar to the color palettes used on the NGDC maps of other Great Lakes.

 
This map was created with GMT.
Author Darekk2 using the Great Lakes Bathymetry and GLOBE tiles
Other versions
The same map but shaded: Lake Superior bathymetry map, deepest point, trenches.png

Licensing

Attribution (in addition to the author of this map):
The NGDC in it's copyright notice says:
As required by 17 U.S.C. 403, third parties producing copyrighted works consisting predominantly of the material produced by U.S. government agencies must provide notice with such work(s) identifying the U.S. Government material incorporated and stating that such material is not subject to copyright protection within the United States. (...)
(for credits see the Source section).

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
Attribution: The author of the work
and Great Lakes Bathymetry and GLOBE
(see above and the Source section)
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

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1 April 2015

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Date/TimeThumbnailDimensionsUserComment
current15:24, 11 April 2015Thumbnail for version as of 15:24, 11 April 20151,024 × 1,348 (940 KB)Darekk2restored previous dimensions ...
15:15, 11 April 2015Thumbnail for version as of 15:15, 11 April 2015779 × 1,024 (646 KB)Darekk2thicker contours with interval 100 m, contours and annotations 300 m white
15:06, 1 April 2015Thumbnail for version as of 15:06, 1 April 20151,024 × 1,348 (907 KB)Darekk2User created page with UploadWizard
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