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K-type geomagnetic index nowcast with data quality control
geomagnetic activity index real-time computing nowcast system
2015/8/27
A nowcast system for operational estimation of a proxy K-type geomagnetic index is presented. The system is based on a fully automated computer procedure for real-time digital magnetogram data acquisi...
Analysis of the geomagnetic activity of the Dst index and self-affine fractals using wavelet transforms
geomagnetic activity Dst index self-affine fractals wavelet transforms
2009/11/11
The geomagnetic activity of the Dst index is analyzed using wavelet transforms and it is shown that the Dst index possesses properties associated with self-affine fractals. For example, the power spec...
Prediction of the Geomagnetic K Index Based on its Previous Value
geomagnetic forecasting geomagnetic variations K index
2009/6/9
The statistical behaviour of the geomagnetic K index is studied at two observatories in Finland:Nurmijärvi in the subauroral region and Sodankylä near the auroral region. Using data of 1953–...