{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Kaj E Williams", "hasEmail": "mailto:kewilliams@usgs.gov"}, "description": "Grand Falls Dune Field (GFDF) on the Navajo Nation (70\u202fkm\u202fNE of Flagstaff, AZ) is an active, bimodal dune system in both grain size and composition. Felsic grains derive from the Little Colorado River, while mafic (basaltic) grains are sourced locally from nearby cinder cones, making GFDF an excellent terrestrial analog for dune fields on Mars, Venus, and Titan.\nA long\u2011term meteorological network was installed in the dune field, recording 10\u2011minute interval\u2011averaged values of air temperature (C), wind speed (mph), wind direction (degrees clockwise from north), and max wind speed (mph) from 8\u202f/\u202f31\u202f/\u202f2009 to 6\u202f/\u202f3\u202f/\u202f2014. Cumulative precipitation (inches) was also logged over the same period. This dataset provides high\u2011resolution environmental information essential for comparative planetary dune studies. See Bogle et al (2015) for further information.\nReference: Hayward, R.\u202fK.\u202fet al. (2010) 2nd Int. Plan. Dunes Workshop, Abstract #2004. Bogle, R., Redsteer, M. H., & Vogel, J. (2015). Field measurement and analysis of climatic factors affecting dune mobility near Grand Falls on the Navajo Nation, southwestern United States. Geomorphology, 228, 41-51.\nFieldwork on the Navajo Nation was conducted under a permit from the Navajo Nation Minerals Department. Any persons wishing to conduct geologic investigations on the Navajo Nation must first apply for and receive a permit from the Navajo Nation Minerals Department, P.O. Box 1910, Window Rock, Arizona 86515, and telephone # (928) 871-6587.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1TJFD9N", "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.68c05cbbd4be025f1dac0cd4.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_68c05cbbd4be025f1dac0cd4", "keyword": ["Air Temperature", "Arizona", "Grand Falls Dune Field", "Precipitation", "USGS:68c05cbbd4be025f1dac0cd4", "Wind", "biota"], "modified": "2025-12-22T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-111.19000, 35.41500, -111.14500, 35.45500", "theme": ["geospatial"], "title": "Meteorological Data for Grand Falls Dune Field, Arizona from 2009-2014 (ver. 1.1, December 2025)"}