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The correlations of ions density with geomagnetic activity and solar dynamic pressure in cusp region

Dandouras, I.; Lucek, E.; Reme, H. +5 more

A statistical study of the properties of ions (O+, He+ and H+) measured by the Cluster-II in cusp region as a function of the solar wind dynamic pressure and geomagnetic index Kp respectively was made during the summer and fall of 2001-2003. The main results are that: (1) O+ ion density responds in a significant way to geomagnetic index Kp, and He…