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Ali G. Hafez and Essam Ghamry, “Automatic detection of geomagnetic sudden Commencements via Time Frequency Clusters,” Ad-vances Space Research, Vol. 48, Issue 9, 2011, pp. 1537–1544. doi:10.1016/j.asr.2011.05.025

has been cited by the following article:

• TITLE: Method of Detection Abnormal Features in Ionosphere Critical Frequency Data on the Basis of Wavelet Transformation and Neural Networks Combination

  AUTHORS: O. V. Mandrikova, Yu. A. Polozov, V. V. Bogdanov, E. A. Zhizhikina

  KEYWORDS: wavelet transformation, neural networks, critical frequency of ionosphere, abnormalities, earthquakes

  JOURNAL NAME: Journal of Software Engineering and Applications, Vol.5 No.12B, January 25, 2013

  ABSTRACT: The research is focused on the development of automatic detection method of abnormal features, that occur in recorded time series of ionosphere critical frequency fOF2 during periods of high solar or seismic activity. The method is based on joint application of wavelet-transformation and neural networks. On the basis of wavelet transformation algorithms for the detection of features and estimation of their parameters were developed. Detection and analysis of characteristic components of time series are performed on the basis of joint application of wavelet transformation and neural networks. Method's approbation is performed on fOF2 data obtained at the observatory “Paratunka” (Paratunka settlement, Kamchatskiy Kray).