{"accessLevel": "public", "bureauCode": ["010:18"], "contactPoint": {"@type": "vcard:Contact", "fn": "Todd Sutherland", "hasEmail": "mailto:todd_sutherland@fws.gov"}, "description": "\"We obtained the 5 m Interferometric Synthetic Aperture Radar Digital Terrain Model (IFSAR DTM) tiles for the study area from https://elevation.alaska.gov/ and mosaicked the products into a single image. We aggregated the DTM to 30 m resolution to represent a more generalized landscape level, and also to allow fairly rapid calculation of more processing-intensive terrain metrics. We then calculated the Sage Topographic Wetness Index at 30 m resolution. This integrates the local slope and the upstream contributing terrain in a continuous metric representing the potential wetness. \n\nThe 'SAGA Wetness Index' is, as the name says, similar to the 'Topographic Wetness Index' (TWI), but it is based on a modified catchment area calculation ('Modified Catchment Area'), which does not think of the flow as very thin film. As result it predicts for cells situated in valley floors with a small vertical distance to a channel a more realistic, higher potential soil moisture compared to the standard TWI calculation.\"", "distribution": [{"@type": "dcat:Distribution", "description": "Saga Topographic Wetness Index, 30 m resolution.", "downloadURL": "https://iris.fws.gov/APPS/ServCat/DownloadFile/195488?Reference=130646", "format": "zip", "mediaType": "application/zip", "title": "swi_alaska_ifsar_dtm30m_i1k.zip"}], "identifier": "http://datainventory.doi.gov/id/dataset/FWS_ServCat_130646", "issued": "2020-06-01T00:00:00Z", "keyword": ["ANWR", "Arctic Coastal Plain", "North Slope", "classification", "ecological land survey", "habitat", "land cover", "mapping", "remote sensing", "soil analysis", "vegetation"], "landingPage": "https://iris.fws.gov/APPS/ServCat/Reference/Profile/130646", "modified": "2020-06-01T00:00:00Z", "programCode": ["010:028", "010:094"], "publisher": {"@type": "org:Organization", "name": "Fish and Wildlife Service"}, "spatial": "-149.387222,66.7421341,-141.000626,70.1697845", "temporal": "2018-10-01/2019-07-01", "theme": ["geospatial"], "title": "Topographic Wetness Index raster - Land Cover Mapping, North Slope of the Arctic National Wildlife Refuge, Alaska, 2019"}