@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/80a16f4f-7b1b-4145-ba8a-f666e17bd36a> a dcat:Dataset ;
    dct:description """Terrestrial dune fields are good indicator of past and present aeolian transport regimes of\r
planets like Earth, Mars, and Venus [e.g.,1; and references therein]. Aeolian processes provide insight into\r
the interactions between the atmosphere and the surface of Mars as well as the weather, climate, and climatic evolution along the Martian history [2-3].\r
A complete catalogue for Martian dune fields, leveled as the Mars Global Digital Dune Database\r
(MGD3\r
), contains information about locations and\r
characteristics of dune fields as well as other parameters [4-5]. The MGD3\r
, done by manual visual photo\r
interpretation from the Thermal Emission Imaging System [THEMIS; 6] of 100 m/pixel images, needs to be\r
updated for a better understanding of surface and atmospheric mechanisms of Mars. This study used an\r
automated object-based image analysis (OBIA) technique from the Context Camera [CTX; 7] image of ~6\r
m/pixel dataset to extract more quick, reliable, and\r
accurate identification of the dunes at Hargraves crater,\r
Mars. Having many advantages over the pixel-based\r
photo interpretation, OBIA can produce more robust\r
and accurate results in detecting dunes on Mars. The\r
study, indeed, is a test case and if proven reliable then\r
the method can be applied to the entire Martian surface\r
to make a higher resolution dune database, which will\r
be an updated version of existing database. The Hargraves crater is located on the Jezero crater watershed\r
on Mars, centered on 75.750 E and 20.750 N (Fig.1).""" ;
    dct:identifier "80a16f4f-7b1b-4145-ba8a-f666e17bd36a" ;
    dct:issued "2026-02-11T15:27:54.232151"^^xsd:dateTime ;
    dct:modified "2026-02-11T15:27:54.232155"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/ddcdf32f-1f57-47f8-981e-949e6e215baa> ;
    dct:title "Automated Object-Based Identification of Dunes at Hargraves Crater, Mars" ;
    dcat:distribution <https://data.amerigeoss.org/dataset/80a16f4f-7b1b-4145-ba8a-f666e17bd36a/resource/ed1db856-1c59-4722-a7d2-67a48d1f9d35> ;
    dcat:keyword "afrigeo",
        "afrigeoss",
        "americaview",
        "amerigeo",
        "amerigeoss",
        "ckan",
        "eurogeo",
        "eurogeoss",
        "geo",
        "geoss",
        "global",
        "remote-sensing" .

<https://data.amerigeoss.org/dataset/80a16f4f-7b1b-4145-ba8a-f666e17bd36a/resource/ed1db856-1c59-4722-a7d2-67a48d1f9d35> a dcat:Distribution ;
    dct:issued "2021-09-16T14:45:49.043367"^^xsd:dateTime ;
    dct:modified "2026-02-11T15:27:54.224742"^^xsd:dateTime ;
    dct:title "Lunar and Planetary Conference / 1157.PDF" ;
    dcat:accessURL <https://ui.adsabs.harvard.edu/abs/2019LPI....50.1157E/abstract> .

<https://data.amerigeoss.org/organization/ddcdf32f-1f57-47f8-981e-949e6e215baa> a foaf:Agent ;
    foaf:name "AmericaView" .