{
  "source": {
    "source": "Forti et al. (2022), Quaternary Research 110, 165\u2013183, Figure 14",
    "doi": "https://doi.org/10.1017/qua.2022.22",
    "periodAsPublished": "5000\u20134000 years ago",
    "claim": "Suggested position of the Persian Gulf coastline",
    "precision": "Approximate cartographic reconstruction; source pixels about 450\u2013530 m. Not a surveyed or universally accepted shoreline.",
    "license": "CC BY 4.0; adapted from the source figure; original copyright University of Washington, 2022"
  },
  "articleURL": "https://www.cambridge.org/core/journals/quaternary-research/article/paleoenvironment-and-depositional-context-of-the-sumerian-site-of-abu-tbeirah-nasiriyah-southern-mesopotamia-iraq/FE5F0F666EEF1BEC71C3C5AC58999322",
  "officialRepositoryURL": "https://iris.cnr.it/handle/20.500.14243/441568",
  "retrievedPDFMirror": "https://www.ancientportsantiques.com/wp-content/uploads/Documents/PLACES/IndOc-Gulf/AbuTbeirah-Forti2022.pdf",
  "sourceFigure": {
    "file": "sources/forti-2022-figure14.jpg",
    "pixels": [
      875,
      623
    ],
    "sha256": "70262efbd92d647252fc351da28393b9692669569d70d6e0934eece9e57779a9"
  },
  "graticuleControl": {
    "longitude": [
      [
        310,
        46.5
      ],
      [
        626,
        48
      ]
    ],
    "latitude": [
      [
        143,
        31.9
      ],
      [
        375,
        30.8
      ]
    ]
  },
  "independentSiteChecks": [
    {
      "city": "ur",
      "sourcePixel": [
        227,
        342
      ],
      "estimatedCoordinates": [
        46.10601265822785,
        30.956465517241377
      ],
      "siteCoordinates": [
        46.10541981168791,
        30.96131794655308
      ],
      "angularResidualDegrees": 0.004888510738967529
    },
    {
      "city": "uruk",
      "sourcePixel": [
        128,
        264
      ],
      "estimatedCoordinates": [
        45.63607594936709,
        31.326293103448275
      ],
      "siteCoordinates": [
        45.6390521574333,
        31.32337501090747
      ],
      "angularResidualDegrees": 0.004168102509544585
    }
  ],
  "method": "Largest connected cyan region in the retained source figure; internal text holes filled. Exact pixel-edge tracing, affine graticule registration, with crop edges excluded from the shoreline. No shoreline was moved to meet archaeological sites.",
  "limits": "One published suggested configuration, not an ancient DEM or a dated coastline for every deity tradition. It does not make Girsu or Nigin open-sea ports. Deltaic freshwater/brackish marshes extended beyond the marine Gulf. Modern rivers and GSHHG coast remain reference layers. The +4 m EGM2008 scenario is retained separately and is not this reconstruction.",
  "output": {
    "file": "palaeogulf.geojson",
    "sha256": "255120a3591dcba41e54ff1c5316d8fee41e2e93213ea1928373fb35fb5f8035",
    "boundaryVertices": 2375
  }
}