@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/6ed2bf19-d009-4287-a0fd-50d4a362ef41> a dcat:Dataset ;
    dct:description """Polygonal systems formed by thermal contraction cracking are complex landscape features widespread in terrestrial periglacial regions. The manner in which cracking occurs is controlled by various environmental factors and determines dimension, shape, and orientation of polygons. We studied the geomorphometry of polygonally-patterned ground on Svalbard to draw a terrestrial analogy to small-scale polygonal structures ion Mars. We performed a comparative quantitative terrain analysis based on high-resolution stereo remote-sensing data (i.e., HRSC-AX, HiRISE) in combination with terrestrial field data and multivariate statistics to determine the relationship of polygon geomorphometry to local environmental conditions. Results show that polygonal structures on Svalbard and in Utopia Planitia, Mars, are similar with respect to their size and shape. A comparable thermal contraction cracking genesis is likely. Polygon evolution, however, is strongly related to regional and local landscape dynamics. Individual polygon dimensions and orthogonality vary according to age, thermal contraction cracking activity, and local subsurface conditions. \r
\r
This dataset is part of the data collection __["Mapped polygon pattern geomorphometry from HRSC-AX"](/group/collection-mapped-polygon-pattern-geomorphometry-from-hrsc-ax)__ that contains polygon net data from 8 sites on Svalbard in shapefile format:\r
\r
Act-IWS = Active Ice-Wedge site Adventdalen (AD1)\r
AD2 to AD4 = Adventdalen sites 2 to 4\r
IWS = Ice-wedge site Adventdalen\r
CALM = Circumarctic Active-Layer Monitoring polygon site Adventdalen\r
HCP = High Center Polygons site Adventdalen\r
Isdammen = location Isdammen site Adventdalen\r
\r
Detailed information about methods and results can be found in the [publication to which this dataset is a supplement](https://doi.org/10.1016/j.geomorph.2011.07.002).""" ;
    dct:identifier "DOI:10.1594/PANGAEA.921087" ;
    dct:issued "2020-08-07T10:25:56.877046"^^xsd:dateTime ;
    dct:modified "2022-11-03T14:07:21.068034"^^xsd:dateTime ;
    dct:publisher <https://apgc.awi.de/organization/5afd87f7-7080-4080-aaef-105b0580644c> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((16.3645 78.1946, 16.3645 78.2017, 16.4123 78.2017, 16.4123 78.1946, 16.3645 78.1946))"^^gsp:wktLiteral ] ;
    dct:title "Mapped polygon pattern geomorphometry from HRSC-AX, 2009, AD2 Adventdalen, Svalbard (NO)" ;
    owl:versionInfo "1.0" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Ulrich, Mathias" ;
            vcard:hasEmail <mailto:Mathias.Ulrich@uni-leipzig.de> ] ;
    dcat:distribution <https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/9f864cfd-1c70-458c-80a1-f6223f7c8a8a>,
        <https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/dba1f55b-7b0c-4335-8037-65fcd70ab5f8>,
        <https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/ffdc6aa3-8d2f-48da-b01a-c7fd8e891d2a> ;
    dcat:keyword "Multivariate Statistic",
        "Patterned Ground",
        "Permafrost",
        "Permafrost Characteristic",
        "Polygonal Networks",
        "Quantitative Terrain Analysis" ;
    dcat:landingPage <https://doi.pangaea.de/10.1594/PANGAEA.921087> .

<https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/9f864cfd-1c70-458c-80a1-f6223f7c8a8a> a dcat:Distribution ;
    dct:format "PNG" ;
    dct:issued "2020-08-07T10:29:45.710254"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:55.532666"^^xsd:dateTime ;
    dct:title "Preview" ;
    dcat:accessURL <https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/9f864cfd-1c70-458c-80a1-f6223f7c8a8a/download/previewad2.png> ;
    dcat:byteSize "63397"^^xsd:nonNegativeInteger ;
    dcat:mediaType "image/png" .

<https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/dba1f55b-7b0c-4335-8037-65fcd70ab5f8> a dcat:Distribution ;
    dct:description "zipped ESRI Shapefiles" ;
    dct:format "SHP" ;
    dct:issued "2020-08-07T10:28:29.493962"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:55.532441"^^xsd:dateTime ;
    dct:title "Adventdalen Site AD2 Polygons" ;
    dcat:accessURL <https://download.pangaea.de/dataset/921087/files/polygons_AD2.zip> ;
    dcat:mediaType "application/zip" .

<https://apgc.awi.de/dataset/6ed2bf19-d009-4287-a0fd-50d4a362ef41/resource/ffdc6aa3-8d2f-48da-b01a-c7fd8e891d2a> a dcat:Distribution ;
    dct:description """M. Ulrich, E. Hauber, U. Herzschuh, S. Härtel, L. Schirrmeister,\r
Polygon pattern geomorphometry on Svalbard (Norway) and western Utopia Planitia (Mars) using high-resolution stereo remote-sensing data, Geomorphology, Volume 134, Issues 3–4, 2011, Pages 197-216, ISSN 0169-555X, https://doi.org/10.1016/j.geomorph.2011.07.002""" ;
    dct:format "HTML" ;
    dct:issued "2020-08-07T10:29:11.308724"^^xsd:dateTime ;
    dct:modified "2021-11-01T11:08:55.532561"^^xsd:dateTime ;
    dct:title "Publication this dataset is a supplement to" ;
    dcat:accessURL <https://doi.org/10.1016/j.geomorph.2011.07.002> .

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

<https://doi.pangaea.de/10.1594/PANGAEA.921087> a foaf:Document .