@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/84df34de-8d78-4f98-bdd3-475d34cb364c>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """[Text from NASA's THEMIS home page 
http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html ]

The Search Coil Magnetometer (SCM) measures low frequency magnetic field fluctuations and waves in three directions (tri-axial) in the Earth’s magnetosphere. Scientists believe that low frequency magnetic fluctuations and waves play an important role in triggering substorms. Frequencies of the waves range from several octaves below the lowest key on the piano (0.1 Hz) up to the top key on the piano (4 kHz). The SCM will measure this range to identify the instability that triggers substorms. Data from the SCM will be especially important in studying the waves in the “current disruption region” about 10 Earth Radii away from Earth in the magnetotail plasma sheet, as well as at larger distances where neutral lines are expected to form. Together with the other instruments of the THEMIS suite, the SCM will reveal the link between waves and the location(s) where substorms begin, thereby identifying the basic substorm mechanism.


Group: Instrument_Details
   Entry_ID: SCM
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Magnetic Field/Electric Field Instruments
      Short_Name: SCM
      Long_Name: SEARCH COIL MAGNETOMETERS
   End_Group
   Group: Associated_Platforms
      Short_Name: THEMIS
   End_Group
   Online_Resource: http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html
   Online_Resource: http://themis.ssl.berkeley.edu/instrument_scm.shtml
   Sample_Image: http://www.nasa.gov/images/content/168039main_SCM_ETU_1_med.jpg
   Creation_Date: 2008-07-18
   Group: Instrument_Logistics
      Instrument_Owner: CETP (France)
      Instrument_Owner: NASA (USA)
   End_Group
End_Group"""@en ;
  skos:prefLabel "SCM"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/bb175474-5e70-47be-8e1f-8dcd7563cc5b> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/bb175474-5e70-47be-8e1f-8dcd7563cc5b>
  skos:prefLabel "Magnetic Field/Electric Field Instruments"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/84df34de-8d78-4f98-bdd3-475d34cb364c> .