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

<https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8> a dcat:Dataset ;
    dct:description """Researchers gathered data on annual snow layers at Siple Dome, Antarctica, using borehole optical stratigraphy. This data set contains annual layer depths and firn optical brightness. The brightness log is a record of reflectivity of the firn, and peaks in brightness are interpreted to be fine-grained high-density winter snow, as part of the wind slab depth-hoar couplet. 

Data are available via FTP in ASCII text (.txt) format""" ;
    dct:identifier "C1386250703-NSIDCV0" ;
    dct:issued "2000-12-15"^^xsd:date ;
    dct:language "{en-US}" ;
    dct:modified "2001-11-15"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-148.8200 -81.6600, -148.8200 -81.6600, -148.8200 -81.6600, -148.8200 -81.6600, -148.8200 -81.6600))"^^gsp:wktLiteral ] ;
    dct:title "Annual Layers at Siple Dome, Antarctica, from Borehole Optical Stratigraphy, Version 1" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Richard Alley" ;
            vcard:hasEmail <mailto:rba6@psu.edu> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/0c698c27-406a-494f-b0a6-c429a85fde54>,
        <https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/58ade1ce-c19b-4a34-8a09-e1d159b92696>,
        <https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/854a85c7-ae32-4150-ab3a-8f985356f82a> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "cryosphere",
        "earth-science",
        "geo",
        "geoss",
        "national",
        "north-america",
        "snow-ice",
        "terrestrial-hydrosphere",
        "united-states" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/0c698c27-406a-494f-b0a6-c429a85fde54> a dcat:Distribution ;
    dct:description "Documentation explaining the data and how it was processed." ;
    dct:format "HTML" ;
    dct:issued "2020-11-12T04:16:49.143667"^^xsd:dateTime ;
    dct:modified "2025-11-23T00:35:07.853900"^^xsd:dateTime ;
    dct:title "Download this dataset" ;
    dcat:accessURL <http://nsidc.org/data/nsidc-0515/versions/1/documentation> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/58ade1ce-c19b-4a34-8a09-e1d159b92696> a dcat:Distribution ;
    dct:description "Search results for publications that cite this dataset by its DOI." ;
    dct:format "HTML" ;
    dct:issued "2020-11-12T04:16:49.143657"^^xsd:dateTime ;
    dct:modified "2025-11-23T00:35:07.853103"^^xsd:dateTime ;
    dct:title "Google Scholar search results" ;
    dcat:accessURL <https://scholar.google.com/scholar?q=10.7265%2FN5DB7ZRZ> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/81840797-b7ab-475b-9b64-67c0505325b8/resource/854a85c7-ae32-4150-ab3a-8f985356f82a> a dcat:Distribution ;
    dct:description "Direct download, with optional registration page." ;
    dct:format "HTML" ;
    dct:issued "2020-11-12T04:16:49.143664"^^xsd:dateTime ;
    dct:modified "2025-11-23T00:35:07.853513"^^xsd:dateTime ;
    dct:title "Download this dataset" ;
    dcat:accessURL <http://nsidc.org/forms/NSIDC-0515_or.html?major_version=1> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .