@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/b56d53ea-511f-486f-b917-26000794ab51>
  skos:prefLabel "Acoustic Sounders"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/ebda5043-7bfd-4041-ade8-3f12fa6d0078> .

<https://gcmd.earthdata.nasa.gov/kms/concept/ebda5043-7bfd-4041-ade8-3f12fa6d0078>
  skos:definition """INFRASONIC MICROPHONES are microphones (devices that amplifie
noise and sound) that refer to sound frequencies lower than
those at the lower limit of average, unimpaired human hearing,
which is about 16 to 30 Hz."""@en ;
  skos:prefLabel "INFRASONIC MICROPHONES"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/b56d53ea-511f-486f-b917-26000794ab51> ;
  a skos:Concept .