2.2.1 spase://SMWG/Repository/WDC/Geomagnetism/GFZ.Potsdam GeoForschungsZentrum (GFZ-Potsdam) 2019-05-05T12:34:56Z GFZ-Potsdam assumed responsibility for creating and distributing Kp and related geomagnetic activity indices in 1997. Otherwise, GFZ has a broad spectrum of activities. GFZ-Potsdam spase://SMWG/Person/Hans.Joachim.Linthe GeneralContact GFZ Top WWW Page https://www.gfz-potsdam.de/startseite/ GFZ Top WWW Page EN