{
  "type": "Collection",
  "id": "DigitalCoast_DAV:id_14842",
  "stac_version": "1.1.0",
  "description": "NOAA Appalachia Topobathymetric Lidar data were collected by NV5 using Leica Chiroptera 4X and Leica Chiroptera 5 systems. The data was acquired between 20240907 and 20250805 in 99 missions. The data includes topobathymetric data in a LAS format 1.4, point data record format 6, with the following classifications in accordance with project specifications and the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards:\n\n\t\t\t\t1  - Unclassified\n\t\t\t\t1  - Withheld - Edge clip \n\t\t\t\t1  - Overlap Withheld - Unrefracted green data from Chiroptera sensor\n\t\t\t\t2  - Ground\n\t\t\t\t7  - Withheld -Low noise\n\t\t\t\t18 - Withheld - High noise\n\t\t\t\t22 - Temporal exclusion\n\t\t\t\t40 - Bathymetric bottom or submerged topography\n\t\t\t\t41 - Water surface\n\t\t\t\t42 - Synthetic- Chiroptera synthetic water surface\n\t\t\t\t43 - Submerged feature\n\t\t\t\t45 - Water column\n\t\t\t\t46 - Submerged Aquatic Vegetation (SAV)\n\t\t\t\t47 - Withheld - Green Laser Submerged Noise\n\t\t\t\t48 - Submerged Temporal Exclusion - submerged features excluded due to temporal changes\n\t\t\t\t\n\t\t\t\tThe channel bits are mapped as the following:\n\t\t\t\t0 - Chiroptera green shallow laser\n\t\t\t\t1 - Chiroptera synthetic water surface\n\t\t\t\t3 - Chiroptera NIR\n\t\t\t\n\t\t\t\tThe user byte is mapped as the following:\n\t\t\t\t10 - Chiroptera green shallow\n\t\t\t\t11 - Chiroptera green shallow 4X\n\t\t\t\t12 - Chiroptera green shallow synthetic\n\t\t\t\t30 - Chiroptera NIR\n\nThe dataset also includes lidar intensity values, number of returns, return number, time, and scan angle.  The horizontal datum for the the provided LAS files is NAD83 (2011), projected in UTM 17N. The vertical datum of the Ellipsoidal height LAS files is in GRS80 ellipsoid heights.",
  "links": [
    {
      "rel": "root",
      "href": "./collection.json",
      "type": "application/json",
      "title": "2024 - 2025 NOAA NGS Topobathy Lidar: Appalachia Rivers"
    },
    {
      "rel": "self",
      "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/14842/stac/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./block01/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./block02/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./block03/collection.json",
      "type": "application/json"
    },
    {
      "rel": "child",
      "href": "./block04/collection.json",
      "type": "application/json"
    }
  ],
  "stac_extensions": [
    "https://stac-extensions.github.io/classification/v2.0.0/schema.json"
  ],
  "classification:classes": [
    {
      "value": 1,
      "name": "Unclassified",
      "description": "Unclassified"
    },
    {
      "value": 2,
      "name": "Ground",
      "description": "Ground"
    },
    {
      "value": 22,
      "name": "Temporal_Exclusion",
      "description": "Temporal Exclusion"
    },
    {
      "value": 40,
      "name": "Bathymetric_point",
      "description": "Bathymetric point"
    },
    {
      "value": 41,
      "name": "Water_surface",
      "description": "Water surface"
    },
    {
      "value": 42,
      "name": "Derived_water_surface",
      "description": "Derived water surface"
    },
    {
      "value": 43,
      "name": "Submerged_Object",
      "description": "Submerged Object"
    },
    {
      "value": 45,
      "name": "Water_column",
      "description": "Water column"
    },
    {
      "value": 46,
      "name": "Submerged_Vegetation",
      "description": "Submerged Vegetation"
    }
  ],
  "title": "2024 - 2025 NOAA NGS Topobathy Lidar: Appalachia Rivers",
  "extent": {
    "spatial": {
      "bbox": [
        [
          -80.48668838914173,
          38.788118328118024,
          -77.87650431039381,
          42.741977716471254
        ]
      ]
    },
    "temporal": {
      "interval": [
        [
          "2024-09-07T19:16:09Z",
          "2024-09-07T19:19:29Z"
        ]
      ]
    }
  },
  "license": "CC-BY-1.0"
}