Antarctic polar cap total electron content observations from Casey Station

Beggs, Helen; Essex, E. A.; Rasch, D.

doi:10.1016/0021-9169(94)90105-8

Cited by 4 publications

(1 citation statement)

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“…In the southern polar region, the amplitude scintillation and TEC measurements at Casey in Antarctica were performed by Beggs et al (1994) and Tate and Essex (2001) using NNSS signals. The patches were observed in the polar cap region at various locations and times during the April-August period of 1994-1995. In recent years, observations of GPS scintillations at high latitudes were reported by many authors (e.g., De Franceschi et al 2006;Meggs et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Statistics of GPS ionospheric scintillation and irregularities over polar regions at solar minimum

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Ren

et al. 2010

GPS Solut

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A statistical study of the occurrence characteristic of GPS ionospheric scintillation and irregularity in the polar latitude is presented. These measurements were made at Ny-Alesund, Svalbard [78.9°N, 11.9°E; 75.8°N corrected geomagnetic latitude (CGMLat)] and Larsemann Hills, East Antarctica (69.4°S, 76.4°E; 74.6°S CGMLat) during 2007-2008. It is found that the GPS phase scintillation and irregularity activity mainly takes place in the months 10, 11 and 12 at Ny-Alesund, and in the months 5, 6 at Larsemann Hills. The seasonal pattern of phase scintillation with respect to the station indicates that the GPS phase scintillation occurrence is a local winter phenomenon, which shows consistent results with past studies of 250 MHz satellite beacon measurements. The occurrence rates of GPS amplitude scintillation at the two stations are below 1%. A comparison with the interplanetary magnetic field (IMF) B y and B z components shows that the phase scintillation occurrence level is higher during the period from later afternoon to sunset (16-19 h) at Ny-Alesund, and from sunset to pre-midnight (18-23 h) at Larsemann Hills for negative IMF components. The findings seem to indicate that the dependence of scintillation and irregularity occurrence on geomagnetic activity appears to be associated with the magnetic local time (MLT).

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Section: Introductionmentioning

confidence: 99%