PLASMON WP2 Report on SANSA Activities (Southern African ULF Stations) Peter Sutcliffe SANSA Space...
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PLASMON WP2 Report on SANSA Activities (Southern African ULF Stations) Peter Sutcliffe SANSA Space Science
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Transcript of PLASMON WP2 Report on SANSA Activities (Southern African ULF Stations) Peter Sutcliffe SANSA Space...
PLASMON WP2
Report on SANSA Activities(Southern African ULF Stations)
Peter SutcliffeSANSA Space Science
Namibia
South Africa
StationGeographic AACGM
L-ValueLat Long Lat Long
HER -34.42 19.23 -42.77 83.79 1.89
SUT -32.40 20.67 -41.39 86.27 1.81
KMH -26.54 18.11 -37.17 86.02 1.60
HBK -25.88 27.70 -36.25 96.18 1.54
OTJ -20.63 17.19 -32.42 87.00 1.41
TSU -19.20 17.58 -31.15 87.83 1.37
INTERMAGNET and ULF stations in Southern Africa
Example of FLR frequency determination
Example of Pc3 FLR frequency determination using amplitude difference and phase difference methods from SUT and HER induction magnetometer data.
SUT
HER
Namibia
South Africa
StationGeographic AACGM
L-ValueLat Long Lat Long
HER -34.42 19.23 -42.77 83.79 1.89
SUT -32.40 20.67 -41.39 86.27 1.81
KMH -26.54 18.11 -37.17 86.02 1.60
HBK -25.88 27.70 -36.25 96.18 1.54
OTJ -20.63 17.19 -32.42 87.00 1.41
TSU -19.20 17.58 -31.15 87.83 1.37
INTERMAGNET and ULF stations in Southern Africa
Comparison of Hermanus Induction and LEMI-025 Magnetometers (Pc3)
LEMI-025
Induction
Comparison of Hermanus Induction and LEMI-025 Magnetometers (Pc4 & Pi2)
LEMI-025
InductionPc3-4 Pi2
Pc3-4 Pi2
Namibia
South Africa
StationGeographic AACGM
L-ValueLat Long Lat Long
HER -34.42 19.23 -42.77 83.79 1.89
SUT -32.40 20.67 -41.39 86.27 1.81
KMH -26.54 18.11 -37.17 86.02 1.60
HBK -25.88 27.70 -36.25 96.18 1.54
OTJ -20.63 17.19 -32.42 87.00 1.41
TSU -19.20 17.58 -31.15 87.83 1.37
INTERMAGNET and ULF stations in Southern Africa
LEMI-025 Fluxgate Magnetometer
Proposed system for data logging
Fig. 3. The mean and standard deviation of the dominant pulsation periods of the H-component observed at the stations SAA (L=1.84), AUG (L=1.64), MAR (L=1.52) and TSU (L=1.37) are indicated by the circles and error bars, respectively.
The short dashed line shows the periods computed using a plasma model containing both O+ and H+ as a function of L-value.
The long dashed line shows the periods computed with the same H+ distribution, but with O+ excluded.
Hattingh, S. K. F. and P. R. Sutcliffe, Pc3 pulsation eigenperiod determination at low latitudes, J. Geophys. Res., 92, 12433, 1987.
Effect of O+ on FLR frequency
