@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a> a dcat:Dataset ;
    dct:description """The SAR Freeze/Thaw product indicates the timing (day of year) of ground surface freeze-up and thawing at a resolution of 1 km. It is derived from the ENVISAT ASAR sensor operating in Global Monitoring (GM) mode. The SAR F/T product represents timing (day of year) of ground surface freeze-up and thawing at a resolution of 1 km. The version 2 release of the data covers the years 2005 through 2010 for the regional sites Ob Estuary, Alaska, Mackenzie, Laptev Sea Coast and Central Yakutia. Product quality and geographical coverage is strongly dependent on the availability of ASAR GM data. The available number of measurements per year is supplied with the dataset.\r
\r
More information about the image processing and the freeze/thaw retrieval can be found in the product guide. \r
\r
This dataset is part of the ESA Data User Element (DUE) Permafrost [Full Product Set](https://doi.org/10.1594/PANGAEA.780111).""" ;
    dct:identifier "DOI:10.1594/PANGAEA.779658" ;
    dct:issued "2018-08-21T13:37:41.396853"^^xsd:dateTime ;
    dct:modified "2021-11-02T08:59:47.431331"^^xsd:dateTime ;
    dct:publisher <https://apgc.awi.de/organization/5afd87f7-7080-4080-aaef-105b0580644c> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((66.5000 63.0000, 66.5000 73.5000, 79.5000 73.5000, 79.5000 63.0000, 66.5000 63.0000))"^^gsp:wktLiteral ] ;
    dct:title "Freeze/Thaw Timing from ENVISAT ASAR GM, 2005-2010, Ob Estuary and Yamal Peninsula, Western Siberia (RU)" ;
    owl:versionInfo "2.0" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Annett Bartsch" ;
            vcard:hasEmail <mailto:info@globpermafrost.info> ] ;
    dcat:distribution <https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/103909c1-b02a-46d0-9d5c-04b152f7d66e>,
        <https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/1a927427-5c91-4301-84f5-1d07a086c956>,
        <https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/363a9b0e-2842-4edf-bb5e-a31c7c7f18db> ;
    dcat:keyword "ENVISAT ASAR GM",
        "Freeze",
        "Permafrost",
        "Thaw" ;
    dcat:landingPage <https://doi.org/10.1594/PANGAEA.779658> .

<https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/103909c1-b02a-46d0-9d5c-04b152f7d66e> a dcat:Distribution ;
    dct:format "PDF" ;
    dct:issued "2018-08-21T15:38:28.977658"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:02.986583"^^xsd:dateTime ;
    dct:title "Product Guide" ;
    dcat:accessURL <http://epic.awi.de/30305/1/ESA_DUE_Permafrost_SAR_FT_version2_product_guide_v1.0.pdf> .

<https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/1a927427-5c91-4301-84f5-1d07a086c956> a dcat:Distribution ;
    dct:format "PNG" ;
    dct:issued "2018-08-21T15:37:53.087567"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:02.986415"^^xsd:dateTime ;
    dct:title "Preview" ;
    dcat:accessURL <https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/1a927427-5c91-4301-84f5-1d07a086c956/download/rftobestuary.png> .

<https://apgc.awi.de/dataset/3414bf5b-697e-4548-bc7a-6ea12e33038a/resource/363a9b0e-2842-4edf-bb5e-a31c7c7f18db> a dcat:Distribution ;
    dct:format "Geotiff" ;
    dct:issued "2018-08-21T15:38:14.570064"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:02.986721"^^xsd:dateTime ;
    dct:title "Timing of Freeze/Thaw and Number of Observations" ;
    dcat:accessURL <http://hs.pangaea.de/sat/due/regional_ASAR_F_T1km_ObEstuary_2005-2010_geotiff.zip> .

<https://apgc.awi.de/organization/5afd87f7-7080-4080-aaef-105b0580644c> a foaf:Agent ;
    foaf:name "PANGAEA" .

<https://doi.org/10.1594/PANGAEA.779658> a foaf:Document .