{
  "source": "GEBCO 2026 Grid \u00b7 shaded relief \u00b7 ice-surface elevation",
  "layer": "GEBCO_LATEST",
  "sourceProjection": "EPSG:4326",
  "displayProjection": "+proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +x_0=0 +y_0=0 +a=6378273 +b=6356889.44891 +units=m +no_defs +type=crs",
  "retrieved": "2026-09-30",
  "sourceUrl": "https://www.gebco.net/data-products/gebco-web-services/web-map-service",
  "requestUrl": "https://wms.gebco.net/mapserv?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=GEBCO_LATEST&STYLES=&SRS=EPSG:4326&BBOX=-180,50,180,90&WIDTH=4096&HEIGHT=1024&FORMAT=image/png",
  "notes": "Saved reference imagery, reprojected by nearest-neighbour to the existing Hughes 1980 polar stereographic view. Shading is not a point-depth lookup. Not for navigation."
}