By Aileen Buckley, Mapping Center Lead
The Ocean Basemap (Ocean_Basemap) map service was published recently on ArcGIS Online (services.arcgisonline.com, server.arcgisonline.com). This global map shows the sea floor of the oceans, along with both surface feature names and subsurface feature names. The Ocean Basemap is designed for use by GIS professionals interested in bathymetry, marine science and conservation, and ocean mapping.
Currently the Ocean Basemap service is available globally down to 1:1,000,000. The smallest scales use a global bathymetry dataset from the General Bathymetric Chart of the Oceans GEBCO_08 grid. At 1:1,000,000 scale, the bathymetric data in U.S. waters is from the National Oceanic and Atmospheric Adminstration (NOAA).
For information on how to use the Ocean Basemap, see Using your own basemaps (and projection) with the ArcGIS.com map viewer.
If you have questions or feedback, please post them in the ArcGIS Online forum.
7 Responses to Announcing the new Ocean basemap
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There is a spelling error on the Ocean Basemap. On the coast of North Carolina is the Pamlico Sound. The map, however, spells it Pemlico, which is incorrect. We were planning on using this for the National Estuary Program’s (U.S. EPA) mapping application, but the Pamlico sound is prominent and desperately needs correcting.
http://en.wikipedia.org/wiki/Pamlico_Sound (for reference)
Thank you.
Just a couple more comments about the Ocean Basemap. First of all, it looks great and this is a highly valuable basemap product. Second, the state lines seem to disappear when at larger scales, though I’m not sure if it is a color or line thickness effect. Perhaps its a bit of both. Lastly, is there a larger scale tile available? It looks like around 1:750K the map and label quality starts to degrade considerably.
Thank you.
Thanks for your comments — I will pass them along to the oceans basemap production team!
Has anyone else experienced difficulties with this service? It worked fine and today I don’t seem to be able to raise it. Thanks for any info on this. Also posted here:
ArcGIS – Ocean Basemap http://bit.ly/oZDgNE
We checked and this looks fine now so hopefully you are no longer having any problems. If you are, please send us another comment to let us know!
Really love this new basemap but there does seem to be a problem with the extents given by the MapServer service.
If we look at at World Topo basemap (http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer) you will see that the Full Extent is given as:
Full Extent:
XMin: -20037507.0671618
YMin: -19971868.8804086
XMax: 20037507.0671618
YMax: 19971868.8804086
Spatial Reference: 102100 (3857)
You’ll see you get the same for World Street, World Terrain etc.
However, for Ocean Basemap (http://server.arcgisonline.com/ArcGIS/rest/services/Ocean_Basemap/MapServer) you get the following:
Full Extent:
XMin: -22041259.1770665
YMin: -33265069.1542242
XMax: 22041259.1770665
YMax: 33265069.1542243
Spatial Reference: 102100 (3857)
So if you load Ocean Basemap into a new Flex application (etc.) the JSON reports this Full Extent and when the user pans “off the edge of the world”, you get lots of failed tile requests, because they don’t exist but the map viewer clears a large enough area for the new tiles which makes it look clunky.
Only way around it at the moment is to define your primary basemap as one of the ones that does work then overlay the Ocean Basemap over the top. Not ideal as doubles tile requests/bandwidth
Any chance this can be fixed?
Cheers
Ian
(ian.watkins@metoffice.gov.uk)
Hi. We are looking into this. Thank you.