Welcome to data.geolink.org!

What is this place? data.geolink.org hosts a SPARQL endpoint for people to query the GeoLink knowledge base which contains RDF information on a number of ocean and earth science data providers:

• Biological and Chemical Oceanography Data Management Office (BCO-DMO)
• Rolling Deck to Repository (R2R)
• DataONE
• International Ocean Discovery Program (IODP)
• System for Earth Sample Registration (SESAR)
• Marine Biological Laboratory/Woods Hole Oceanographic Institution (MBLWHOI) Library

• Total number of statements in the knowledge base Show SPARQL

          
  SELECT (COUNT(?s) AS ?triples) 
  WHERE { ?s ?p ?o }
          
        

• Total number of statements by graph Show SPARQL

          
  SELECT ?g count(*) as ?count 
  WHERE {
    GRAPH ?g { ?s ?p ?o } 
  } 
  ORDER BY DESC(?count)
          
        

• Top 10 vessels with the most cruises Show SPARQL

          
  PREFIX gl: <http://schema.geolink.org/1.0/base/main#> 
  
  SELECT ?name ?s COUNT(?cruise) as ?count
  WHERE {
    ?s a gl:Vessel .
    ?s rdfs:label ?name .
    ?cruise gl:hasVessel ?s
  }
  ORDER BY DESC(?count)
  LIMIT 10
          
        

• All of the unique chief scientists with cruises on the Sikuliaq Show SPARQL

          
  PREFIX gl: <http://schema.geolink.org/1.0/base/main#>
  
  SELECT distinct ?person ?fullname ?affilname
  WHERE { 
    ?cruise gl:hasVessel <http://data.rvdata.us/id/vessel/33BI> .
    ?cruise gl:hasChiefScientist ?person .
    ?person gl:hasFullName ?fullname .
    ?person gl:hasAffiliation ?affil .
    ?affil rdfs:label ?affilname 
  } 
          
        

• Vessels with the most chief scientists (not unique) Show SPARQL

          
  PREFIX gl: <http://schema.geolink.org/1.0/base/main#>
  
  SELECT ?vesselname COUNT(?vesselname) as ?count 
  WHERE {
    ?cruise gl:hasVessel ?vessel .
    ?cruise gl:hasChiefScientist ?person .
    ?vessel rdfs:label ?vesselname
  } 
  ORDER BY DESC(?count)