• The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity 

      Matzka, J.ORCIDiD; Stolle, C.ORCIDiD; Yamazaki, Y.ORCIDiD; Bronkalla, O.; Morschhauser, A.ORCIDiD (Space Weather, 2021-05-07)
      The geomagnetic Kp index is one of the most extensively used indices of geomagnetic activity, both for scientific and operational purposes. This article reviews the properties of the Kp index and provides a reference for ...