Location and details of Greenland seismograph stations. === Original Data Source === International Registry of Seismograph Stations (IR) The International Seismograph Station Registry (IR) has been jointly maintained by the International Seismological Centre (ISC) and the World Data Center for Seismology (NEIC/USGS) since the 1960s. At present there are over 26000 stations (including those already closed) with globally unique codes registered in the IR. Citation: International Seismological Centre (2020), International Seismograph Station Registry (IR), https://doi.org/10.31905/EL3FQQ40 Citation URL: http://www.isc.ac.uk/registries/