Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya

Details Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jastp..70.1034l&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, vol. 70, issue 7, pp. 1034-1045

Physics

3

Equatorial Ionosphere, Ionospheric Scintillations, Irregularities, Electric Fields

Scientific paper

The effects of geomagnetic storm on GPS ionospheric scintillations are studied here using GPS scintillation data recorded at Sanya (18.3°N, 109.5°E; geomagnetic: 7.6°N, 180.8°E), the southmost station in the Chinese longitude region. GPS scintillation/TEC and DMSP data are utilized to show the development of irregularities during the period year 2005 (solar minimum). Statistical analysis of K planetary index (Kp) and amplitude scintillation index (S4) indicates that most storms of the year did not trigger the scintillation occurrence at Sanya. However, cases of scintillation occurring during moderate and strong storm (Dst<-100) periods show clearly that the development of irregularities producing scintillations can be triggered by geomagnetic storms during the low scintillation occurrence season. The effects (trigger or not trigger/inhibit) depend on the maximum dDst/dt determined local time sector, and can be explained by the response of the equatorial vertical drift velocities to magnetospheric and ionospheric disturbance electric fields. For station Sanya, the maximum dDst/dt determined local time is near the noon (or post-midnight) sector for most storms of the year 2005, which inhibited (or did not trigger) the post-sunset (or post-midnight) scintillation occurrence and then led to the phenomena that the statistical results presented.

Affiliated with

Also associated with

No associations

Rating

Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1602644