<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_3_2.xsd">
<Version>2.3.2</Version>
  <DisplayData>
    <ResourceID>spase://ASWS/DisplayData/Spectrograph/Lem_Spectrograph</ResourceID>
    <ResourceHeader>
      <ResourceName>Australian Space Weather Services Learmonth Observatory Spectrograms</ResourceName>
      <ReleaseDate>2021-03-29T17:14:50Z</ReleaseDate>
      <Description>Culgoora and Learmonth Observatories dynamic spectrogram plots display frequency in MHz on the vertical axis and time in UT on the horizontal axis. The time span for each plot varies, generally spanning local day time hours with time resolution of 3 seconds. The frequency range is 18 - 1800 MHz for Culgoora spectrogams and 25 - 180 MHz for Learmonth spectrograms. The intensity values are color coded and are expressed as relative logarithmic units (0 to 255). 
The Culgoora spectrograms consist of 4 frequency bands: 18-57, 57-180, 180-570 570 -1800 MHz
and Learmonth has 2 bands: 25-75, 75-180 MHz. The two Learmonth bands are each divided into 400 frequency steps.     
		 Culgoora spectrograph data is available since November 1992, Learmonth data since June 2000.
		 </Description>
      <Acknowledgement>We are thankful to the Culgoora and Learmonth observatories of Space Weather Network, Bureau of Meteorology of Australia for the observations of Culgoora and Learmonth Spectrograph data.</Acknowledgement>
      <Contact>
        <PersonID>spase://ASWS/Person/Kehe.Wang</PersonID>
        <Role>GeneralContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://ASWS/Person/Kehe.Wang</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <InformationURL>
        <Name>Documentation</Name>
        <URL>https://downloads.sws.bom.gov.au/wdc/wdc_spec/doc/</URL>    
        <Description>includes descriptions of Observation Log format, data format</Description>
        <Language>en</Language>
      </InformationURL>
      <InformationURL>
        <Name>Software</Name>
        <URL>https://downloads.sws.bom.gov.au/wdc/wdc_tools/solar_viewers/spectrograph/</URL>   
        <Description>WDC Tools Solar Viewers</Description>
        <Language>en</Language>
      </InformationURL>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/SWS</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>World Data Centre: Data Display and Download: Spectrograph </Name>
        <URL>https://www.sws.bom.gov.au/World_Data_Centre/1/9</URL>
	<Style>Search</Style>      
        <Description>includes browse display interface, and link to data availability chart</Description>
        <Language>en</Language>
      </AccessURL>
      <AccessURL>
        <Name>Real Time Display</Name>
        <URL>https://www.sws.bom.gov.au/Solar/3/2/1</URL>
	<Style>File</Style>        
        <Description>Real Time display of spectrograph (18-180 MHz) during daylight hours in Learmonth</Description>
        <Language>en</Language>
      </AccessURL>   
      <AccessURL>
        <Name>Access to dynamic spectra plots (not with most browsers)</Name>
        <URL>https://downloads.sws.bom.gov.au/wdc/wdc_spec/</URL>
	<Style>Listing</Style>  
        <Description>Access to the GIF images, thumbnails, event logs and raw data files</Description>
        <Language>en</Language>
      </AccessURL>
      <Format>GIF</Format>
      <Encoding>None</Encoding>
    </AccessInformation>
    <InstrumentID>spase://ASWS/Instrument/Ground/Learmonth/Radiospectrograph</InstrumentID>
    <MeasurementType>Waves.Passive</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2000-06-16T05:00:00Z</StartDate>
        <RelativeStopDate>-P2D</RelativeStopDate>
        <Note>Data are current to within a day or two.</Note>
      </TimeSpan>
    </TemporalDescription>
    <DisplayCadence>PT12H</DisplayCadence>
	<ObservedRegion>Sun</ObservedRegion>
    <ObservedRegion>Earth.Magnetosphere</ObservedRegion>
    <ObservedRegion>Heliosphere.Inner</ObservedRegion>
    <ObservedRegion>Heliosphere.Outer</ObservedRegion>
    <Caveats>The time span for each plot varies, generally spanning daylight hours.</Caveats>
    <!-- Keywords pertaining to the data presentation -->
    <Keyword>Dynamic Spectrogram</Keyword>
    <Keyword>Spectrogram</Keyword>
    <!-- Keywords pertaining to the physical phenomena appearing in spectrograms -->
    <Keyword>Solar radio burst</Keyword>
    <Keyword>Type II Solar radio burst</Keyword>
    <Keyword>Type III Solar radio burst</Keyword>
    <Keyword>Type IV Solar radio burst</Keyword>
    <Keyword>Transmitter</Keyword>
    <Keyword>Jovian Decametric Radiation</Keyword>
    <Parameter>
      <Name>Relative counts</Name>
      <Description>The intensity values are color coded and are expressed as relative logarithmic units (0 to 255).</Description>
      <Cadence>PT12H</Cadence>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <Qualifier>Magnitude</Qualifier>
        <Qualifier>Pseudo</Qualifier>
        <WaveQuantity>ACElectricField</WaveQuantity>
        <FrequencyRange>
          <SpectralRange>RadioFrequency</SpectralRange>
          <Low>18</Low>
          <High>180</High>
          <Units>MHz</Units>
        </FrequencyRange>
      </Wave>
    </Parameter>
  </DisplayData>
</Spase>
