@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/01407ecf-45af-4fcc-8a1b-9b383636e2e4>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """HYDRA is a plasma experimental investigation on the POLAR spacecraft. HYDRA is
a collection of electrostatic analyzers designed for high resolution
observations of electron and ion velocity distributions in the earth's polar
magnetosphere and was designed and constructed by a consortium of institutions
for the purpose of improving our understanding of the complex interactions of
the polar magnetosphere with the solar wind and the ionosphere.
HYDRA subsystems are:
- Duo-Deca-Electron-Ion-Spectrometer (DDEIS)
- Parallel Plate Analyzer (PPA)
- Data Processing Unit (DPU) and UV Intracalibration System 

For more information, see: 
http://www-st.physics.uiowa.edu/
and
http://pwg.gsfc.nasa.gov/polar/polar_inst.shtml


Group: Instrument_Details
   Entry_ID: HYDRA
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Particle Detectors
      Short_Name: HYDRA
      Long_Name: Hot Plasma Analyzer
   End_Group
   Group: Associated_Platforms
      Short_Name: POLAR
   End_Group
   Online_Resource: http://www-st.physics.uiowa.edu/
   Sample_Image: http://www-st.physics.uiowa.edu/www/images/ddeis2.jpg
   Group: Instrument_Logistics
      Instrument_Start_Date: 1996-02-24
      Instrument_Owner: University of Iowa
   End_Group
End_Group"""@en ;
  skos:prefLabel "HYDRA"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171>
  skos:prefLabel "Particle Detectors"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/01407ecf-45af-4fcc-8a1b-9b383636e2e4> .