{
  "type": "Collection",
  "id": "seafloor-geomorphology",
  "stac_version": "1.0.0",
  "title": "Global Seafloor Geomorphic Features Map (Harris et al. 2014)",
  "description": "Global polygon classification of seafloor geomorphic features including seamounts, ridges, abyssal plains, trenches, canyons, shelves, and 20 other feature types. Compiled from 24 individual shapefiles distributed by Blue Habitats / CSIRO, merged into a single dataset with a feature_type column identifying each polygon's geomorphic class. Total: 152,079 polygons. Derived from Harris et al. (2014) Geomorphology of the oceans. Marine Geology, 352, 4-24.",
  "license": "CC-BY-4.0",
  "links": [
    {
      "rel": "self",
      "href": "https://s3-west.nrp-nautilus.io/public-high-seas/seafloor-geomorphology/stac-collection.json",
      "type": "application/json"
    },
    {
      "rel": "root",
      "href": "https://s3-west.nrp-nautilus.io/public-data/stac/catalog.json",
      "type": "application/json",
      "title": "NRP Public Data Catalog"
    },
    {
      "rel": "parent",
      "href": "https://s3-west.nrp-nautilus.io/public-high-seas/stac-collection.json",
      "type": "application/json"
    },
    {
      "rel": "derived_from",
      "href": "https://bluehabitats.org/?page_id=58",
      "title": "Global Seafloor Geomorphic Features Map source"
    },
    {
      "rel": "license",
      "href": "https://creativecommons.org/licenses/by/4.0/",
      "title": "Creative Commons Attribution 4.0 International"
    }
  ],
  "extent": {
    "spatial": {
      "bbox": [
        [
          -180,
          -90,
          180,
          90
        ]
      ]
    },
    "temporal": {
      "interval": [
        [
          "2014-01-01T00:00:00Z",
          null
        ]
      ]
    }
  },
  "assets": {
    "seafloor-geomorphology-parquet": {
      "href": "https://s3-west.nrp-nautilus.io/public-high-seas/seafloor-geomorphology.parquet",
      "type": "application/x-parquet",
      "title": "Global Seafloor Geomorphology GeoParquet",
      "description": "152,079 polygons covering all geomorphic feature types, merged from 24 source shapefiles. Geometry column: geometry (WKB, EPSG:4326).",
      "roles": [
        "data"
      ],
      "table:columns": [
        {
          "name": "fid",
          "type": "int64",
          "description": "Feature ID (sequential integer)."
        },
        {
          "name": "feature_type",
          "type": "string",
          "description": "Geomorphic feature class. Values: Abyss, Abyssal_Classification, Basins, Bridges, Canyons, Escarpments, Fans, Glacial_troughs, Guyots, Hadal, Plateaus, Ridges, Rift_valleys, Rises, Seamounts, Shelf, Shelf_Classification, Shelf_valleys, Sills, Slope, Spreading_ridges, Terraces, Trenches, Troughs"
        },
        {
          "name": "Geomorphic",
          "type": "string",
          "description": "Geomorphic sub-classification label (present for some feature types, null for others)."
        },
        {
          "name": "area_km2",
          "type": "float64",
          "description": "Polygon area in square kilometres."
        },
        {
          "name": "_cng_fid",
          "type": "int64",
          "description": "Universal per-feature row id synthesized by cng-datasets (row-unique 1…N, one per feature). Dedup / feature-count key: COUNT(DISTINCT _cng_fid)."
        },
        {
          "name": "geometry",
          "type": "geometry",
          "description": "Polygon/MultiPolygon geometry in EPSG:4326 (WGS84)."
        }
      ],
      "vector:layers": [
        "seafloor-geomorphology"
      ]
    },
    "seafloor-geomorphology-pmtiles": {
      "href": "https://s3-west.nrp-nautilus.io/public-high-seas/seafloor-geomorphology.pmtiles",
      "type": "application/vnd.pmtiles",
      "title": "Global Seafloor Geomorphology PMTiles",
      "description": "Vector tiles up to zoom 10 with polygon simplification. Source layer: seafloor-geomorphology.",
      "roles": [
        "visual"
      ],
      "vector:layers": [
        "seafloor-geomorphology"
      ],
      "table:columns": [
        {
          "name": "fid",
          "type": "int64"
        },
        {
          "name": "feature_type",
          "type": "string"
        },
        {
          "name": "Geomorphic",
          "type": "string"
        },
        {
          "name": "area_km2",
          "type": "float64"
        },
        {
          "name": "_ogr_geometry__bbox.xmax",
          "type": "double"
        },
        {
          "name": "_ogr_geometry__bbox.xmin",
          "type": "double"
        },
        {
          "name": "_ogr_geometry__bbox.ymax",
          "type": "double"
        },
        {
          "name": "_ogr_geometry__bbox.ymin",
          "type": "double"
        }
      ]
    },
    "seafloor-geomorphology-hex": {
      "href": "https://s3-west.nrp-nautilus.io/public-high-seas/seafloor-geomorphology/hex/h0=*/data_0.parquet",
      "type": "application/x-parquet",
      "title": "Global Seafloor Geomorphology H3 Hex Parquet (resolution 6)",
      "description": "Feature type per H3 cell at resolution 6 (~36km edge length). Includes parent resolutions h5 and h0 for multi-scale joins. Hive-partitioned by h0.",
      "roles": [
        "data",
        "overview"
      ],
      "table:columns": [
        {
          "name": "feature_type",
          "type": "string",
          "description": "Geomorphic feature class. Values: Abyss, Abyssal_Classification, Basins, Bridges, Canyons, Escarpments, Fans, Glacial_troughs, Guyots, Hadal, Plateaus, Ridges, Rift_valleys, Rises, Seamounts, Shelf, Shelf_Classification, Shelf_valleys, Sills, Slope, Spreading_ridges, Terraces, Trenches, Troughs"
        },
        {
          "name": "_cng_fid",
          "type": "int64",
          "description": "Cloud-native geometry feature ID. Unique per source feature — one value per source polygon, repeated on every hex cell covering that polygon. Use for feature-level deduplication: COUNT(DISTINCT _cng_fid), GROUP BY _cng_fid, or joins to the GeoParquet asset."
        },
        {
          "name": "h6",
          "type": "uint64",
          "description": "H3 cell index at resolution 6 (~36km edge length)."
        },
        {
          "name": "h5",
          "type": "uint64",
          "description": "H3 cell index at resolution 5 (~96km edge length), parent of h6."
        },
        {
          "name": "h0",
          "type": "int64",
          "description": "H3 base cell index at resolution 0, used as Hive partition key."
        }
      ],
      "h3:native_resolution": 6,
      "h3:parent_resolutions": [
        5,
        0
      ]
    }
  },
  "providers": [
    {
      "name": "Harris et al. / Blue Habitats / CSIRO",
      "roles": [
        "producer",
        "licensor"
      ],
      "url": "https://bluehabitats.org"
    },
    {
      "name": "Boettiger Lab, UC Berkeley",
      "roles": [
        "processor",
        "host"
      ],
      "url": "https://boettiger-lab.github.io"
    }
  ],
  "keywords": [
    "seafloor",
    "geomorphology",
    "bathymetry",
    "seamounts",
    "trenches",
    "abyssal",
    "ocean",
    "polygons"
  ],
  "sci:citation": "Harris, P.T., Macmillan-Lawler, M., Rupp, J. and Baker, E.K. (2014). Geomorphology of the oceans. Marine Geology, 352, 4-24. doi:10.1016/j.margeo.2014.01.011"
}