{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Colin M Dundas", "hasEmail": "mailto:cdundas@usgs.gov"}, "description": "Although ice in the Martian mid-latitudes is typically covered by a layer of dust or\nregolith, it is exposed in some locations by fresh impact craters or in erosional scarps. In\nboth cases, the exposed ice is massive or excess ice with a low lithic content. We find that\nerosional scarps occur between 50\u201361 north and south latitude, and that they are\nconcentrated in and near Milankovi\u010d crater in the northern hemisphere and southeast of the\nHellas basin in the southern hemisphere. These may represent locations of particularly thick\nor clean bodies of ice. Pits created by retreat of the scarps represent\nsublimation-thermokarst landforms that evolve in a manner distinct from other ice-loss\nlandforms on Mars. New impact craters reveal that clean subsurface ice is widespread at\nmiddle and high latitudes in both hemispheres at depths less than one meter. Both the depth\nto ice and the ice content appear to exhibit significant variability over short distances\n(tens to hundreds of meters). The lowest-latitude exposed ice is near 39 N and is at the\nedge of a region where impact exposures between 40\u201350 N are common, consistent with other\nindications of a high ice content in this area. This lowest-latitude ice may be currently\nunstable and subliming. Impact craters on lineated valley fill excavate ice blocks that may\nrepresent the top of debris-covered glacial ice. Together, these landforms indicate\nwidespread, clean subsurface ice at middle latitudes on Mars. The distribution and\nproperties of this ice could provide information about past climate conditions.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9Y8FR1R", "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.5f99f0b8d34e198cb786e8e7.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5f99f0b8d34e198cb786e8e7", "keyword": ["Ice", "Mars", "Milankovic crater", "Planetary science", "USGS:5f99f0b8d34e198cb786e8e7", "geoscientificInformation"], "modified": "2021-01-22T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-180.0000, -90.0000, 180.0000, 90.0000", "theme": ["geospatial"], "title": "Locations and Properties of Ice-Exposing Scarps and New Impact Craters in the Mid-Latitudes of Mars"}