{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Timothy N Titus", "hasEmail": "mailto:ttitus@usgs.gov"}, "description": "Ripple images of a small region within GFDF were acquired using a NIKON D250 DSLR camera, then processed through Agisoft Metashope professional photogrammetry software to create digital elevation models (DEMs) of the ripple field. The DEMs included here represent dates between 02-20-2024 to 07-25-2024.\nThe photogrammetry component therefore comprises seven zipped folders, each containing a DEM (digital elevation model), an orthomosaic, colorized shaded relief (all TIFF files), and a processing report (PDF) labeled with the day data was collected.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13HPPYM", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.67b78df2d34e1a2e835b13b7.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_67b78df2d34e1a2e835b13b7", "keyword": ["Arizona", "Grand Falls", "Navajo Indian Reservation", "USGS:67b78df2d34e1a2e835b13b7", "atmospheric and climatic processes", "atmospheric properties", "climatologyMeteorologyAtmosphere", "digital elevation models", "dunes", "field inventory and monitoring", "geoscientificInformation"], "modified": "2025-07-10T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-111.1681, 35.4345, -111.1680, 35.4346", "theme": ["geospatial"], "title": "Ripple Photogrammetry at Grand Falls Dune Field, Arizona, from February 2024 to July 2024"}