Global Multi-Resolution Topography (GMRT)
GMRT Open Geospatial Consortium (OGC) WxS Services
Our Web Map Services (WMS) are available in three projections and allow any OGC-enabled client to access map imagery from our Global Multi-Resolution Topography (GMRT) Synthesis. Use one the following URLS to access GMRT:
- WGS 84 / World Mercator (EPSG:3395) or WGS 84 / Latitude/Longitude (EPSG:4326)
- WGS 84 / Antarctic Polar Stereographic (EPSG:3031)
- WGS 84 / Arctic Polar Stereographic (EPSG:3995)
GMRT REST-type Services
GMRT GridServer is a REST-type service for direct access to gridded
data from the GMRT Synthesis. A variety of output formats are supported.
Requested data may be up to 1GB in NetCDF, or approximately 14 by 14 degrees
at 100 meters per node (maximum available resolution). GeoTIFF and ESRI ASCII
grids have smaller node size limits (25% and 12.5% of NetCDF node size respectively).
To request larger areas at higher resolution, use our
URL Builder Service.
More information about the service is
available from its documentation page.
(Output formats: GMT3 NetCDF, COARDS compliant NetCDF, ESRI ASCII (see note above), and GeoTIFF (see note above))
GMRT ImageServer provides access to images from the
GMRT Synthesis. Requested
images may be up to 8000 pixels in either dimension.
(Output format: jpeg)
GMRT Profile Server provides access to bathymetry profiles from the
Profiles are currently 100 points and can be specified as a single
line or a multiline segment.
(Output formats: json, geojson, plain text)
GMRT Point Server provides access to point data from the
Point data is retrieved from the highest resolution data available.
(Output formats: json, geojson, plain text, xml)
GMRT Cruise Info provides access to cruise metadata from the
(Output formats: json)