GPS scintillations associated with cusp dynamics and polar cap patches Yaqi Jin, Jøran I. Moen, Kjellmar Oksavik, Andres Spicher, Lasse B.N. Clausen and Wojciech J. Miloch J. Space Weather Space Clim., 7 (2017) A23 Published online: 10 October 2017 DOI: 10.1051/swsc/2017022