@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/a1e8831d-a914-42fa-808a-f7f4df25509e>
  ns0:altLabel [ ] ;
  skos:definition """The objective of the MFE experiment on Geotail is to measure the magnetic field
variation of the magnetotail in the frequency below 50 Hz.

The MGF experiment consists of dual three-axis fluxgate magnetometers and a
three-axis search coil magnetometer. Triad fluxgate sensors, which utilize a
ring core geometry, are installed at the end and middle of a 6 m deployable
mast. Three search coils are mounted approximately one-half of the way out on
another 6 m boom together with search coils for the VLF wave in the PWI system.

The fluxgate magnetometers are of standard design and consist of an amplifier,
filter, phase sensitive detector, integrator, and a voltage-current convertor.
The fluxgate magnetometers operate in seven dynamic ranges to cover various
regions of the Earth's magnetosphere and the solar wind: +/-16 nT, +/-64 nT,
+/-256 nT, +/-1024 nT, +/-4096 nT, +/-16384 nT, and +/-65536 nT, and supply 16
vectors/sec.

The search coil magnetometer system consists of three sensors, preamplifier,
amplifier, filter, multiplexer, and an A/D converter. The search coil
magnetometers operate in a frequency range of 0.5 kHz to 1 kHz, and supply 128
vectors/sec.

The fluxgate magnetometer operates in both real time and record modes, while
the search coil data are used only in real time mode.

Principal Investigator:
Dr. Tsugunobu Nagai
Tokyo Institue of Technology
Earth and Planetary Sciences
Tokyo 152-8551  Japan
Phone:
Fax:
e-mail: nagai@geo.titech.ac.jp

See:
http://pwg.gsfc.nasa.gov/geotail_inst.shtml


Group: Instrument_Details
   Entry_ID: MFE
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Magnetic Field/Electric Field Instruments
      Short_Name: MFE
      Long_Name: Magnetic Field Experiment (Geotail)
   End_Group
   Group: Associated_Platforms
      Short_Name: GEOTAIL
   End_Group
   Online_Resource: http://pwg.gsfc.nasa.gov/geotail_inst.shtml#MGF
   Online_Resource: http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1992-044A&ex=6
   Group: Instrument_Logistics
      Data_Rate: 3.584 kbps
      Instrument_Start_Date: 1992-07-24
      Instrument_Owner: Tokyo Institute of Technology
   End_Group
End_Group"""@en ;
  skos:prefLabel "MFE"@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/a1e8831d-a914-42fa-808a-f7f4df25509e> .