5:15 PM - 6:30 PM
[PEM16-P21] Ionospheric Scintillation Observations with GNSS receivers in Tromsoe, Norway
Keywords:ionosphere, GNSS, scintillation
We have analyzed ROTI, defined as a standard deviation of the differential of TEC (Total Electron Content) during 1 minutes. At 00:10-00:20 UT on 8 Februay 2014, ROTI increased to 0.7 TECU/min, but S4 did not increase. We have calculated cross-correlation coefficient (CCC) of TEC variation obtained at two-antennas installed with a mutual distance of 242 m, and found that CCC is close to unity. This result indicate that the plasma density in the ionosphere is spatially homogeneous although it varies temporally. On the other hand, at 11:30-12:00 UT on 27 October 2014, S4 index increased to 0.4 whereas ROTI was low. For this event CCF of TEC variations at the two-antenna is approximately 0.6, indicating the ionospheric plasma density was inhomogeneous to cause amplitude scintillation.