@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 schema: <http://schema.org/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29> a schema:DataDownload,
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        dcat:Dataset,
        dcat:Distribution,
        foaf:Document ;
    dct:bibliographicCitation "Read the documentation, GEM terms of use and how to cite: https://data.g-e-m.dk/guides. Please get in touch with the GEM secretariat if you need help to cite correctly." ;
    dct:description "Snow bulk density is measured manually in  various places in the Zackenberg valley, during snow covered periods. In this dataset every position is given with its UTM coordinates (WGS 84, UTM Zone 27N) and with the name of the location, where measurements are conducted in the vicinity of existing plots. The densities are never sampled within the existing plots (unless otherwise stated), but in a radius of at least 10 meters from the plot, in an area in which the conditions and characteristics of the snowpack are similar to the given plot. The positions of all the locations are given here in UTM coordiantes (WGS 84, UTM Zone 27N). In cases where total snow depth is missing, snow depth was larger than the measuring equipment, see remarks." ;
    dct:identifier "https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29" ;
    dct:issued "2026-05-20T13:19:06.822076"^^xsd:dateTime,
        "2026-05-20T16:14:46.527705"^^xsd:dateTime ;
    dct:modified "2026-05-20T16:14:46.519707"^^xsd:dateTime,
        "2026-05-20T16:14:46.522215"^^xsd:dateTime ;
    dct:publisher [ a foaf:Agent ;
            foaf:homepage <https://data.g-e-m.dk> ;
            foaf:name "Greenland Ecosystem Monitoring" ],
        [ a foaf:Agent ;
            foaf:homepage <https://data.g-e-m.dk> ;
            foaf:name "Greenland Ecosystem Monitoring" ] ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-20.5700 74.4700, -20.5700 74.4700, -20.5700 74.4700, -20.5700 74.4700))"^^gsp:wktLiteral ] ;
    dct:temporal [ a dct:PeriodOfTime ;
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            dcat:startDate "2004-06-02"^^xsd:date ],
        [ a dct:PeriodOfTime ;
            dcat:endDate "2024-04-27"^^xsd:date ;
            dcat:startDate "2004-06-02"^^xsd:date ] ;
    dct:title "Snow density (bulk density)" ;
    schema:about [ a schema:Thing ;
            schema:name "zackenberg-research-station" ] ;
    schema:citation "Read the documentation, GEM terms of use and how to cite: https://data.g-e-m.dk/guides. Please get in touch with the GEM secretariat if you need help to cite correctly." ;
    schema:creator [ a schema:Organization ;
            schema:contactPoint [ a schema:ContactPoint ;
                    schema:contactType "customer service" ;
                    schema:name "University of Copenhagen (UCPH - Partner 3)" ;
                    schema:url "https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29" ] ;
            schema:name "University of Copenhagen (UCPH - Partner 3)" ] ;
    schema:dateModified "2026-05-20T16:14:46.519707" ;
    schema:datePublished "2020-01-01",
        "2020-01-01T00:00:00" ;
    schema:description "Snow bulk density is measured manually in  various places in the Zackenberg valley, during snow covered periods. In this dataset every position is given with its UTM coordinates (WGS 84, UTM Zone 27N) and with the name of the location, where measurements are conducted in the vicinity of existing plots. The densities are never sampled within the existing plots (unless otherwise stated), but in a radius of at least 10 meters from the plot, in an area in which the conditions and characteristics of the snowpack are similar to the given plot. The positions of all the locations are given here in UTM coordiantes (WGS 84, UTM Zone 27N). In cases where total snow depth is missing, snow depth was larger than the measuring equipment, see remarks." ;
    schema:distribution <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29> ;
    schema:identifier "https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29" ;
    schema:keywords "ARCTIC",
        "CLIMATE INDICATORS",
        "ECOSYSTEMS",
        "GEOGRAPHY",
        "GREENLAND",
        "PHYSICAL GEOGRAPHY",
        "SNOW-ICE" ;
    schema:license "https://creativecommons.org/licenses/by-sa/4.0/" ;
    schema:name "Snow density (bulk density)" ;
    schema:publisher [ a schema:Organization ;
            schema:contactPoint [ a schema:ContactPoint ;
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                    schema:name "Greenland Ecosystem Monitoring" ;
                    schema:url "https://data.g-e-m.dk" ] ;
            schema:name "Greenland Ecosystem Monitoring" ] ;
    schema:spatialCoverage [ a schema:Place ;
            schema:geo [ a schema:GeoShape ;
                    schema:polygon "{\"type\": \"Polygon\", \"coordinates\": [[[-20.57, 74.47], [-20.57, 74.47], [-20.57, 74.47], [-20.57, 74.47]]]}" ] ] ;
    schema:temporalCoverage "2004-06-02/2024-04-27" ;
    schema:url "https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29" ;
    schema:variableMeasured [ a schema:PropertyValue ;
            schema:name "Time" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Time> ;
            schema:unitText "HH:MM" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Time> ],
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            schema:description "Computed density of the snow sampled in grams per cubic centimeter, replicate 3, if it exists" ;
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            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Density_g%2Fcm3_rep3> ;
            schema:unitText "g cm-3" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Density_g%2Fcm3_rep3> ],
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            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Total_snow_depth_cm_rep3> ;
            schema:unitText "Cm" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Total_snow_depth_cm_rep3> ],
        [ a schema:PropertyValue ;
            schema:description "Positions are given in UTM coordinates (WGS 84, UTM Zone 27N)" ;
            schema:name "Easting_mE" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Easting_mE> ;
            schema:unitText "M" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Easting_mE> ],
        [ a schema:PropertyValue ;
            schema:description "Equipment used to take sample" ;
            schema:name "Sampling_method" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Sampling_method> ;
            schema:unitText "-" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Sampling_method> ],
        [ a schema:PropertyValue ;
            schema:description "Computed density of the snow sampled in grams per cubic centimeter, replicate 2, if it exists" ;
            schema:name "Density_g/cm3_rep2" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Density_g%2Fcm3_rep2> ;
            schema:unitText "g cm-3" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Density_g%2Fcm3_rep2> ],
        [ a schema:PropertyValue ;
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            schema:unitText "Cm" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Total_snow_depth_cm_rep2> ],
        [ a schema:PropertyValue ;
            schema:name "Date" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Date> ;
            schema:unitText "YYYY-MM-DD" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Date> ],
        [ a schema:PropertyValue ;
            schema:description "Altitude above sea level, given in meters" ;
            schema:name "Altitude_m_a.s.l." ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Altitude_m_a.s.l.> ;
            schema:unitText "M" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Altitude_m_a.s.l.> ],
        [ a schema:PropertyValue ;
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            schema:name "Location" ;
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            schema:unitText "-" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Location> ],
        [ a schema:PropertyValue ;
            schema:description "Positions are given in UTM coordinates (WGS 84, UTM Zone 27N)" ;
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            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Northing_mN> ;
            schema:unitText "M" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Northing_mN> ],
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            schema:unitText "Cm" ;
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        [ a schema:PropertyValue ;
            schema:description "General remarks about the condition of the snowpack, any comments about the sampling, etc." ;
            schema:name "Remarks" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Remarks> ;
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            schema:url <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29#column=Density_g%2Fcm3_rep1> ] ;
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    owl:versionInfo "1" ;
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        "SNOW-ICE" ;
    dcat:landingPage <https://data.g-e-m.dk/datasets/10.17897/VPCQ-HR29> ;
    dcat:theme "zackenberg-research-station" .