@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa> a dcat:Dataset ;
    dct:description "These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This Data Restoration Project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 µs corresponding to an Apparent Range Interval equal to 3.75 km from c*t/2, where c is the Speed of Light. Ionograms with this Sample Rate are designated as 'Full' Ionograms because they have the full 3.75 km Apparent-Range Resolution. The Ionograms used for most Analyses, and those available from CDAWeb, were produced by averaging every four Samples of the Sounder-Receiver Video Amplitude Output to yield an average Value every 100 µs corresponding to an Apparent-Range Resolution of 15 km. These Ionogram Files are referred to as 'Average' Files with Standard Resolution. Each Ionogram consists of a Fixed-Frequency Portion and a Swept-Frequency Portion. The Time Resolution between Ionograms is typically 14 or 22 s depending on the Frequency Sweep Range." ;
    dct:identifier <https://doi.org/10.48322/gn72-s865> ;
    dct:issued "2026-08-10T19:03:20.547385"^^xsd:dateTime ;
    dct:modified "2026-11-02T22:16:01+00:00"^^xsd:dateTime ;
    dct:publisher <https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> ;
    dct:title "ISIS-2 Topside Sounder Average Ionogram over Falkland Island, United Kingdom: SOL, Latitude -52, Longitude 302" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "NASA Space Physics Data Facility" ;
            vcard:hasEmail <mailto:NASA-SPDF-Support@nasa.onmicrosoft.com> ] ;
    dcat:distribution <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/3151eb99-8db3-4b74-bac8-94147a5f257c>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/47e8741e-424e-4416-a717-a04adf5a0b8a>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/7e9dcd22-1321-40a7-b818-581339b9eb66>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/a1f8e6e9-ea19-404c-8b70-c8f95e19cebb>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/b2591cca-f634-4093-bc89-cb50662689ce>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/bcaa6948-4a70-4c58-891c-595dca7becbe>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/c7fa8059-b32e-4aef-a0d6-6ddb77646a49>,
        <https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/ee111a69-89a1-47db-885f-ac68bcca3770> ;
    dcat:keyword "auroral-kilometric-radiation-akr",
        "ducted-echoes",
        "field-aligned-irregularities-fai",
        "ground-echoes",
        "ground-reflections",
        "ionogram",
        "ionospheric-echoes",
        "ionospheric-reflections",
        "plasma-resonance",
        "plasma-waves",
        "solar-type-iii-bursts",
        "spectrum",
        "swept-frequency-sounder",
        "topside-ionosphere",
        "topside-sounder",
        "upper-hybrid-noise-band",
        "wave-scattering",
        "waves-active" ;
    dcat:theme <%7BHeliophysics%7D> .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/3151eb99-8db3-4b74-bac8-94147a5f257c> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "3151eb99-8db3-4b74-bac8-94147a5f257c" ;
    dct:issued "2026-08-10T19:03:20.551030"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.517401"^^xsd:dateTime ;
    dcat:accessURL <https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1969-009A> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/47e8741e-424e-4416-a717-a04adf5a0b8a> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "47e8741e-424e-4416-a717-a04adf5a0b8a" ;
    dct:issued "2026-08-10T19:03:20.551025"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.516985"^^xsd:dateTime ;
    dcat:accessURL <https://cdaweb.gsfc.nasa.gov/hapi> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/7e9dcd22-1321-40a7-b818-581339b9eb66> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "7e9dcd22-1321-40a7-b818-581339b9eb66" ;
    dct:issued "2026-08-10T19:03:20.551020"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.516566"^^xsd:dateTime ;
    dcat:accessURL <https://spdf.gsfc.nasa.gov/pub/data/isis/topside_sounder/ionogram_cdf/isis2/SOL_52S_302E/> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/a1f8e6e9-ea19-404c-8b70-c8f95e19cebb> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "a1f8e6e9-ea19-404c-8b70-c8f95e19cebb" ;
    dct:issued "2026-08-10T19:03:20.551022"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.516789"^^xsd:dateTime ;
    dcat:accessURL <https://cdaweb.gsfc.nasa.gov/index.html/> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/b2591cca-f634-4093-bc89-cb50662689ce> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "b2591cca-f634-4093-bc89-cb50662689ce" ;
    dct:issued "2026-08-10T19:03:20.551034"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.517816"^^xsd:dateTime ;
    dcat:accessURL <https://hpde.io/NASA/NumericalData/ISIS2/SFS/AverageIonogram/FalklandIslands/PT22S> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/bcaa6948-4a70-4c58-891c-595dca7becbe> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "bcaa6948-4a70-4c58-891c-595dca7becbe" ;
    dct:issued "2026-08-10T19:03:20.551015"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.516322"^^xsd:dateTime ;
    dcat:accessURL <ftps://spdf.gsfc.nasa.gov/pub/data/isis/topside_sounder/ionogram_cdf/isis2/SOL_52S_302E/> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/c7fa8059-b32e-4aef-a0d6-6ddb77646a49> a dcat:Distribution ;
    dct:format "BIN" ;
    dct:identifier "c7fa8059-b32e-4aef-a0d6-6ddb77646a49" ;
    dct:issued "2026-08-10T19:03:20.551032"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.517607"^^xsd:dateTime ;
    dcat:accessURL <https://helio.data.nasa.gov/dataset/ISIS2_SFS_AverageIonogram_FalklandIslands_PT22S> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/e9b0a3e9-c140-4819-b976-c61a65bd6baa/resource/ee111a69-89a1-47db-885f-ac68bcca3770> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:identifier "ee111a69-89a1-47db-885f-ac68bcca3770" ;
    dct:issued "2026-08-10T19:03:20.551027"^^xsd:dateTime ;
    dct:modified "2026-08-10T19:03:20.517186"^^xsd:dateTime ;
    dcat:accessURL <https://spdf.gsfc.nasa.gov/isis/isis-status.html> ;
    dcat:mediaType "text/html" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
    skos:prefLabel "NASA" ;
    foaf:name "NASA" .