Remote auroral activity detection and modeling using low frequency transmitter signal reception at a midlatitude site
The low frequency propagation conditions along the path from Iceland to Germany (52° N 8° E) using the NRK/TFK 37.5 kHz transmitter (63.9° N 22.5° W) prove as an easy to monitor and reliable proxy for north auroral activity. Signal processing using wavelet decomposition allows for quantitative ac...
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2010-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/28/1807/2010/angeo-28-1807-2010.pdf |
| Summary: | The low frequency propagation conditions along the path from Iceland to
Germany (52° N 8° E) using the NRK/TFK 37.5 kHz transmitter (63.9° N 22.5° W) prove
as an easy to monitor and reliable proxy for north auroral activity. Signal
processing using wavelet decomposition allows for quantitative activity level
estimations. Calibration is based upon NOAA POES auroral activity data. Using
an auroral oval model for the local intensity distribution of solar energetic
particle precipitation and a wave propagation model ionospheric D-layer
height decreases along the path can be derived. This in turn gives a hint to
the low latitude extension and intensity of the auroral electrojet currents
that can be responsible for communication and power systems failures. |
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| ISSN: | 0992-7689 1432-0576 |