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

<https://gcmd.earthdata.nasa.gov/kms/concept/9efa7a7f-1bb5-407e-ae38-4d3cf729f868>
  ns0:altLabel [ ] ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/af0968ce-ffe3-44a0-86de-2ec9b9a8fa5d> ;
  skos:prefLabel "IDA"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects> ;
  skos:definition """Project IDA (International Deployment of Accelerometers) is a
      global array of accelerometers that collects low-frequency
      seismic data (Agnew, et. al., 1986). This network has been in
      place since 1975, and has had as many as 18 stations in
      operation between 1978 to 1987. The original purpose of the
      network was to collect data for earth structure and earthquake
      mechanisms, and it has been used to detect slow and silent
      earthquakes (Beroza and Jordan, 1990). The data from 1978 to
      1987 were available, although only 1984 to 1987 were considered
      carefully because of the sparse global coverage in the earlier
      years.  The stations now have an almost uniform distribution
      around the globe and respond to frequencies from about one cycle
      per minute to below one cycle per day.

      For more information, link to
"http://sepwww.stanford.edu/public/docs/sep75/ray1/paper_html/node4.html\""""@en ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/af0968ce-ffe3-44a0-86de-2ec9b9a8fa5d>
  skos:prefLabel "G - I"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/9efa7a7f-1bb5-407e-ae38-4d3cf729f868> .