{
  "type": "Collection",
  "id": "gebco_undersea",
  "stac_version": "1.1.0",
  "description": "Names, generic feature types and geometries of seafloor features (seamounts, canyons, banks, ridges, basins, guyots, fracture zones, trenches ...) approved by the IHO-IOC GEBCO Sub-Committee on Undersea Feature Names (SCUFN), from the NOAA NCEI / IHO DCDB Undersea_Features feature service. The service has three layers, one per geometry type (2,632 points, 1,128 lines, 1,652 polygons), all kept here with the per-row `geom_type` (MultiPoint, MultiLineString or MultiPolygon) and `component` (point, line, polygon). `FEATURE_ID`, the gazetteer's permanent feature number, is the id: a feature that the service serves as both a point and an extent (101 do) keeps `GEBCO:<FEATURE_ID>` on its polygon (else line) and gets `:point` or `:line` on the other rows. Built by build.py from 3 source layer(s).",
  "links": [
    {
      "rel": "root",
      "href": "../catalog.json",
      "type": "application/json",
      "title": "Ocean Metrics gazetteer"
    },
    {
      "rel": "parent",
      "href": "../catalog.json",
      "type": "application/json",
      "title": "Ocean Metrics gazetteer"
    },
    {
      "rel": "agents",
      "href": "./AGENTS.md",
      "type": "text/markdown",
      "title": "Agent/LLM usage guide"
    },
    {
      "rel": "describedby",
      "href": "./README.md",
      "type": "text/markdown",
      "title": "Human-readable documentation"
    },
    {
      "rel": "pmtiles",
      "href": "./places.pmtiles",
      "type": "application/vnd.pmtiles",
      "pmtiles:layers": [
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      ]
    },
    {
      "rel": "license",
      "href": "https://www.gebco.net/data-products/undersea-feature-names",
      "type": "text/html",
      "title": "Attribution terms, no other restriction stated. ArcGIS item f09d579c68b84c5184fef1ac69ea7b24 licenseInfo and the GEBCO page (\"Data set acknowledgement\") both say: \"Please include the following citatio"
    },
    {
      "rel": "via",
      "href": "https://www.gebco.net/data-products/undersea-feature-names",
      "type": "text/html",
      "title": "Upstream publisher page"
    },
    {
      "rel": "via",
      "href": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Undersea_Features/FeatureServer/2",
      "type": "text/html",
      "title": "Source layer (polygon)"
    },
    {
      "rel": "via",
      "href": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Undersea_Features/FeatureServer/1",
      "type": "text/html",
      "title": "Source layer (line)"
    },
    {
      "rel": "via",
      "href": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Undersea_Features/FeatureServer/0",
      "type": "text/html",
      "title": "Source layer (point)"
    }
  ],
  "stac_extensions": [
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    "https://stac-extensions.github.io/file/v2.1.0/schema.json",
    "https://schemas.portolan-sdi.org/portolan/v0.2.0/schema.json",
    "https://stac-extensions.github.io/web-map-links/v1.3.0/schema.json",
    "https://stac-extensions.github.io/projection/v2.0.0/schema.json"
  ],
  "geoparquet:geometry_type": "MultiLineString",
  "geoparquet:feature_count": 5412,
  "table:row_count": 5412,
  "table:primary_geometry": "geometry",
  "table:columns": [
    {
      "name": "place_id",
      "type": "string",
      "description": "prefixed, unique id: GEBCO:<FEATURE_ID>; the point (or line) twin of a feature that also has an extent gets :point (or :line)"
    },
    {
      "name": "authority",
      "type": "string",
      "description": "GEBCO = IHO-IOC GEBCO Gazetteer of Undersea Feature Names"
    },
    {
      "name": "source_id",
      "type": "string",
      "description": "the gazetteer's FEATURE_ID (permanent feature number; shared by a feature's point, line and polygon rows)"
    },
    {
      "name": "name",
      "type": "string",
      "description": "official name followed by the generic term, e.g. 'Satsuma Seamount'"
    },
    {
      "name": "place_type",
      "type": "string",
      "description": "undersea_feature"
    },
    {
      "name": "geom_type",
      "type": "string",
      "description": "geometry type of this row: MultiPoint, MultiLineString or MultiPolygon"
    },
    {
      "name": "status",
      "type": "string",
      "description": "approved: the name is in the SCUFN gazetteer"
    },
    {
      "name": "status_source",
      "type": "string",
      "description": "URL that documents the status"
    },
    {
      "name": "status_date",
      "type": "string",
      "description": "ISO date (or year) the status took effect or was last confirmed; may be empty"
    },
    {
      "name": "status_upstream",
      "type": "string",
      "description": "the source's own status code, verbatim (e.g. BOEM LEASE_STATUS_CD, AREA_STATUS); null when the source has none. may disagree with `status`"
    },
    {
      "name": "status_history",
      "type": "string",
      "description": "JSON array of dated status events [{date, value, source, note}], ascending; null when none is logged"
    },
    {
      "name": "source_url",
      "type": "string",
      "description": "the service endpoint or download the boundary was fetched from"
    },
    {
      "name": "source_date",
      "type": "date32[day]",
      "description": "date of the source's last data edit (retrieval date when the source serves none)"
    },
    {
      "name": "retrieved",
      "type": "timestamp[ms, tz=UTC]",
      "description": "UTC time the boundary was fetched"
    },
    {
      "name": "version",
      "type": "string",
      "description": "collection release version this row was built for"
    },
    {
      "name": "license",
      "type": "string",
      "description": "SPDX identifier of the licence (CC-PDDC = public-domain U.S. government work)"
    },
    {
      "name": "attribution",
      "type": "string",
      "description": "credit line to show with the data"
    },
    {
      "name": "component",
      "type": "string",
      "description": "source layer of the row: polygon (Polygon_Features), line (Line_Features) or point (Point_Features)"
    },
    {
      "name": "NAME_src",
      "type": "string",
      "description": "the gazetteer name without the generic term"
    },
    {
      "name": "TYPE",
      "type": "string",
      "description": "generic feature term (Seamount, Canyon, Bank, Ridge, ...); plural forms exist (Seamounts)"
    },
    {
      "name": "FEATURE_ID",
      "type": "int64",
      "description": "gazetteer feature number; the id part of place_id"
    },
    {
      "name": "OBJECTID",
      "type": "int64",
      "description": "native attribute of the source layer (OBJECTID)"
    },
    {
      "name": "Shape__Area",
      "type": "double",
      "description": "native attribute of the source layer (Shape__Area)"
    },
    {
      "name": "Shape__Length",
      "type": "double",
      "description": "native attribute of the source layer (Shape__Length)"
    },
    {
      "name": "bbox",
      "type": "struct<xmin: double, ymin: double, xmax: double, ymax: double>",
      "description": "GeoParquet bbox-covering column (xmin, ymin, xmax, ymax)"
    },
    {
      "name": "geometry",
      "type": "binary",
      "description": "WKB MultiPoint / MultiLineString / MultiPolygon, EPSG:4326, lines and polygons split at +/-180 antimeridian"
    }
  ],
  "updated": "2026-10-22T18:42:55Z",
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  "gazetteer:authority": "GEBCO",
  "gazetteer:place_type": "undersea_feature",
  "gazetteer:cadence": "monthly",
  "gazetteer:attribution": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names, www.gebco.net. Served by the IHO Data Centre for Digital Bathymetry (IHO DCDB) and NOAA National Centers for Environmental Information (NCEI). Processed by Ocean Metrics.",
  "gazetteer:provenance": {
    "slug": "gebco_undersea",
    "version": "1.0.4",
    "built": "2026-10-22T18:42:16Z",
    "record_count": 5412,
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        "component": "polygon",
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        "retrieved": "2026-10-22T18:42:11Z",
        "record_count": 1652,
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        "item_title": "GEBCO Undersea Feature Names Gazetteer",
        "item_owner": "ncei_noaa",
        "item_modified": "2026-04-17T21:04:20Z",
        "source_license": "<p>Please include the following citation when data from the gazetteer are used or reproduced in reports, presentations and other products:</p><p>IHO-IOC GEBCO Gazetteer of Undersea Feature Names, <a target='_blank' href='https://www.gebco.net' rel='nofollow ugc noopener noreferrer'>www.gebco.net</a></p>",
        "source_attribution": "IHO Data Centre for Digital Bathymetry (IHO DCDB); General Bathymetric Chart of the Oceans (GEBCO); NOAA National Centers for Environmental Information (NCEI)",
        "copyright_text": "IHO Data Centre for Digital Bathymetry (IHO DCDB); General Bathymetric Chart of the Oceans (GEBCO); NOAA National Centers for Environmental Information (NCEI)"
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        "source_license": "<p>Please include the following citation when data from the gazetteer are used or reproduced in reports, presentations and other products:</p><p>IHO-IOC GEBCO Gazetteer of Undersea Feature Names, <a target='_blank' href='https://www.gebco.net' rel='nofollow ugc noopener noreferrer'>www.gebco.net</a></p>",
        "source_attribution": "IHO Data Centre for Digital Bathymetry (IHO DCDB); General Bathymetric Chart of the Oceans (GEBCO); NOAA National Centers for Environmental Information (NCEI)",
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        "source_license": "<p>Please include the following citation when data from the gazetteer are used or reproduced in reports, presentations and other products:</p><p>IHO-IOC GEBCO Gazetteer of Undersea Feature Names, <a target='_blank' href='https://www.gebco.net' rel='nofollow ugc noopener noreferrer'>www.gebco.net</a></p>",
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    "href": "https://www.gebco.net/data-products/undersea-feature-names",
    "title": "IHO-IOC GEBCO Sub-Committee on Undersea Feature Names (SCUFN)"
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