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{"@context": "https://schema.org/", "@type": "Dataset", "@id": "doi:10.15784/601742", "additionalType": ["geolink:Dataset", "vivo:Dataset"], "name": "Distribution of blue ice areas in Antarctica derived from Landsat ETM+ and Modis images", "description": "Blue-ice areas (BIAs) and their geographical distribution in Antarctica were mapped using Landsat-7 ETM+ images with 15 m spatial resolution obtained during the 1999\u20132003 austral summers and covering the area north of 82.5\u00b0 S, and a snow grain-size image of the MODIS-based Mosaic of Antarctica (MOA) dataset with 125 m grid spacing acquired during the 2003/04 austral summer from 82.5\u00b0S to the South Pole. A map of BIAs was created with algorithms of thresholds based on band ratio and reflectance for ETM+ data and thresholds based on snow grain size for the MOA dataset. The underlying principle is that blue ice can be separated from snow or rock by their spectral discrepancies and by different grain sizes of snow and ice. We estimate the total area of BIAs in Antarctica during the data acquisition period is 234 549 km2, or 1.67% of the area of the continent. Blue ice is scattered widely over the continent but is generally located in coastal or mountainous regions. The BIA dataset presented in this study is the first map covering the entire Antarctic continent sourced solely from ETM+ and MODIS data. Support by National Natural Science Foundation of China (grant No. 41106157) and NASA grant NNX10AL42G (nsidc0549_hui_V0).", "citation": "Hui, F., & Scambos, T. (2023) \"Distribution of blue ice areas in Antarctica derived from Landsat ETM+ and Modis images\" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601742.", "datePublished": "2023-10-13", "keywords": ["Antarctica", "Blue Ice", "Cryosphere", "GIS", "LANDSAT", "MODIS", "Remote Sensing", "Snow/Ice"], "creator": [{"@type": "Person", "additionalType": "geolink:Person", "name": "Hui, Fengming", "email": "xcheng@bnu.edu.cn", "affiliation": {"@type": "Organization", "name": null}}, {"@type": "Person", "additionalType": "geolink:Person", "name": "Scambos, Ted", "email": "tascambos@colorado.edu", "affiliation": {"@type": "Organization", "name": "National Snow and Ice Data Center, CIRES, 449 UCB"}}], "distribution": [{"@type": "DataDownload", "additionalType": "http://www.w3.org/ns/dcat#DataCatalog", "encodingFormat": "text/xml", "name": "ISO Metadata Document", "url": "https://www.usap-dc.org/metadata/isoxml/601742iso.xml", "contentUrl": "/dataset/filename"}, {"@type": "DataDownload", "@id": "http://dx.doi.org/10.15784/601742", "additionalType": "dcat:distribution", "url": "http://dx.doi.org/10.15784/601742", "name": "landing page", "description": "Link to a web page related to the resource.. Service Protocol: Link to a web page related to the resource.. Link Function: information", "contentUrl": "/dataset/filename", "encodingFormat": "text/html"}, {"@type": "DataDownload", "@id": "/view/dataset/601742", "additionalType": "dcat:distribution", "url": "/view/dataset/601742", "name": "landing page", "description": "Link to a web page related to the resource.. Service Protocol: Link to a web page related to the resource.. Link Function: information", "contentUrl": "/dataset/filename", "encodingFormat": "text/html"}], "identifier": {"@type": "PropertyValue", "propertyID": "dataset identifier", "value": "doi:10.15784/601742"}, "contributor": [], "license": [{"@type": "CreativeWork", "URL": "https://creativecommons.org/licenses/by-nc-sa/3.0/us/", "name": "MD_Constraints", "description": "useLimitation: Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]. "}, {"@type": "CreativeWork", "name": "MD_LegalConstraints", "description": "accessConstraints: license. otherConstraints: Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]. "}, {"@type": "CreativeWork", "name": "MD_SecurityConstraints", "description": "classification: "}], "publisher": {"@type": "Organization", "name": "U.S. Antarctic Program (USAP) Data Center"}, "spatialCoverage": [{"@type": "Place", "geo": {"@type": "GeoShape", "box": "-180, -90, 180, -60"}}]}
This dataset has been downloaded 1 time since March 2017 (based on unique date-IP combinations)