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

<https://gcmd.earthdata.nasa.gov/kms/concept/11572015-20da-4642-a3d9-af2ac25393a8>
  skos:definition """Geophones are small, cheap instruments instrument for measuring
ground motion. There are many different varieties for different
applications. They are designed for earthquakes, machine
vibrations, oil exploration, mining, etc...

Additional information available at
"http://www.tenrats.org/whatis\""""@en ;
  skos:prefLabel "GEOPHONES"@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 .

<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/11572015-20da-4642-a3d9-af2ac25393a8> .