polar-cap-power
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Transcript of polar-cap-power
![Page 1: polar-cap-power](https://reader031.fdocuments.net/reader031/viewer/2022030215/588a3bad1a28abc6168b65d1/html5/thumbnails/1.jpg)
How is ultra-low frequency (ULF) hydromagnetic power typically characterized in the deep polar cap?
AGO5 Noon (87*S CGMLat)
AGO6 Noon (85*S CGMLat)
SPA Noon (75*S CGMLat)
MCM Noon (80*S CGMLat)
Pc6
Pc5
Pc4
N E V Median Power
…as a function of… (i) frequency band (row),
(ii) magnetic field direction (column),
(iii) location (color), and � (iv) local time (x axis)
Kevin Urban: Sample Visualizations from Rethinking the Polar Cap (JGR, 2016)
![Page 2: polar-cap-power](https://reader031.fdocuments.net/reader031/viewer/2022030215/588a3bad1a28abc6168b65d1/html5/thumbnails/2.jpg)
Median-Relative Spectra = (Dynamic Spectra) / (Time-Independent
Median Spectrum)
AGO5 @ 87*S CGMLat
100 10 1 0.1 0.01 0.001 1e-‐4 1e-‐5 1e-‐6 1e-‐7 1-‐e-‐8
nT2
Pc7 Pc6 Pc5 Pc4 Pc3
Pc7 Pc6 Pc5 Pc4 Pc3
50 25 10 5.0 2.0 1.0 0.50 0.20 0.10 0.04 0.01
Pc7 Pc6 Pc5 Pc4 Pc3
Pc7 Pc6 Pc5 Pc4 Pc3
Pmed{f}
Kevin Urban: Sample Visualizations from Rethinking the Polar Cap (JGR, 2016)
![Page 3: polar-cap-power](https://reader031.fdocuments.net/reader031/viewer/2022030215/588a3bad1a28abc6168b65d1/html5/thumbnails/3.jpg)
AGO5 @ 87*S CGMLat AGO6 @ 85*S CGMLat MCM @ 80*S CGMLat
CGM
EDA
EDD
AGO5
VOS
DMC
AGO6
MIRAGO1
AGO4
MCMCSY
DRV
TNB
SBA
SUDSPA
DVS
2001
50
25
10
5.0
2.0
1.0
0.50
0.20
0.10
0.04
0.01
Pmed{f}
Pc7 Pc6 Pc5 Pc4 Pc3
Pc7 Pc6 Pc5 Pc4 Pc3
Pc7 Pc6 Pc5 Pc4 Pc3
How is ultra-low frequency (ULF) hydromagnetic power typically characterized in the deep polar cap?
Kevin Urban: Sample Visualizations from Rethinking the Polar Cap (JGR, 2016)