@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/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0> a dcat:Dataset ;
    dct:description "PWI>Plasma Wave Instrument Reference: Gurnett, D.A., et al., The Polar Plasma Wave Instrument, Space Science Reviews, Vol. 71, pp. 597-622, 1995. donald-gurnett@uiowa.edu An FFT on 2048 values was used in calibrating the data; i.e., perform FFT, calibrate in frequency domain, perform inverse FFT to get calibrated time series. The coordinate system used is local magnetic field-aligned, a spacecraft centered coordinate system where Z is parallel to the local B-field determined from Polar MFE, X points outward and lies in the plane defined by the Z-axis and the radial vector from the earth to the spacecraft, and Y completes a right-handed system and points eastward. The X- and Z-axes are contained in the north-south plane. Effective Bandwidth is 1.5*delta_f, where delta_f depends on the size of the FFT used to convert to the frequency domain, and delta_t. The unattenuated frequency range for this file type is 20Hz to 2000Hz. These data come in snapshots of 2048 samples per channel, every 128.8 seconds, with a cadence equal to the inverse of the sampling rate (4464 Hz), and individual time tags given in CDF TT2000 format. For a description of the PWI receivers and the different operational modes see https://space.physics.uiowa.edu/plasma-wave/polar/modes.html" ;
    dct:identifier <https://doi.org/10.48322/32d0-db83> ;
    dct:issued "2025-04-08T14:28:52.469267"^^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 "Polar Plasma Wave Instrument, High Frequency Waveform Receiver, 2 kHz, Time Domain Fields" ;
    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/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/02d6caef-1ebc-4d82-a529-9b55a154433d>,
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        <https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/a1d157ac-cf7e-40c4-8943-76a31bfa89fb>,
        <https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/e9b445ca-5611-4403-965a-9014ad24ed81> ;
    dcat:keyword "auroral-hiss",
        "bernstein-waves",
        "cdf-global-attribute-adid_ref-nssd0171",
        "cdf-global-attribute-data_type-h4lhfwr-2khz-6-channels",
        "cdf-global-attribute-data_version-3",
        "cdf-global-attribute-discipline-space-physicsmagnetospheric-science",
        "cdf-global-attribute-mission_group-polar-cdf-global-attribute-mission_group-magnetospheric-data",
        "cdf-global-attribute-mods-created-mar-2021",
        "cdf-global-attribute-project-istpinternational-solar-terrestrial-physics",
        "cdf-global-attribute-title-polar-pwi-hfwr",
        "chorus",
        "continuum-radiation",
        "electostatic-solitary-waves",
        "equatorial-noise",
        "esw",
        "ion-acoustic-waves",
        "langmuir-waves",
        "lower-hybrid-waves",
        "plasmaspheric-hiss",
        "upper-hybrid-waves",
        "waves-passive",
        "whistlers" ;
    dcat:theme <%7BHeliophysics%7D> .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/02d6caef-1ebc-4d82-a529-9b55a154433d> a dcat:Distribution ;
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    dct:modified "2026-08-10T19:22:46.729144"^^xsd:dateTime ;
    dcat:accessURL <https://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h4> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/22a2ea45-ba8b-477f-9318-dedd1dcee86e> a dcat:Distribution ;
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    dct:modified "2026-08-10T19:22:46.732070"^^xsd:dateTime ;
    dcat:accessURL <https://hpde.io/NASA/NumericalData/POLAR/PWI/LHFWR/2kHz/PT0.000224S> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/3f645037-d42d-4ebb-a4ff-278247597b8f> a dcat:Distribution ;
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    dcat:accessURL <https://api.heliocloud.org/cloudcatalog?id=PO_H4_PWI> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/48f4ae27-e554-4b1f-8a30-8a2b033e2f99> a dcat:Distribution ;
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    dcat:accessURL <https://cdaweb.gsfc.nasa.gov/hapi> ;
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<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/4f5705ce-f179-4de1-8bc2-ef9c6a240d68> a dcat:Distribution ;
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    dcat:accessURL <ftps://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h4> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/52b46fb0-c292-4cec-a15a-0f8964a69771> a dcat:Distribution ;
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    dct:modified "2026-08-10T19:22:46.731860"^^xsd:dateTime ;
    dcat:accessURL <https://helio.data.nasa.gov/dataset/POLAR_PWI_LHFWR_2kHz_PT0.000224S> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/768e1f72-3ba4-4bfe-a52a-1450a62b5a9f> a dcat:Distribution ;
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    dct:identifier "768e1f72-3ba4-4bfe-a52a-1450a62b5a9f" ;
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    dct:modified "2026-08-10T19:22:46.731616"^^xsd:dateTime ;
    dcat:accessURL <https://space.physics.uiowa.edu/plasma-wave/polar/data.html> ;
    dcat:mediaType "text/html" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/a1d157ac-cf7e-40c4-8943-76a31bfa89fb> a dcat:Distribution ;
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    dct:modified "2026-08-10T19:22:46.727651"^^xsd:dateTime ;
    dcat:accessURL <https://space.physics.uiowa.edu/plasma-wave/polar/po_h4_pwi/> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/eeca6b5c-9851-4db5-b3b7-eeb7837ceac0/resource/e9b445ca-5611-4403-965a-9014ad24ed81> a dcat:Distribution ;
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    dct:modified "2026-08-10T19:22:46.730260"^^xsd:dateTime ;
    dcat:accessURL <https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PO_H4_PWI&index=sp_phys> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
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