Wavelet analysis

Advantage of wavelet technique to highlight the observed geomagnetic perturbations linked to the Chilean Tsunami (2010)

Klausner V., Mendes O., Domingues M.O., Papa A.R.R., Tyler R.H., Frick P., Kherani E.A. // Journal of Geophysical Research: Space Physics, 2014. V.119. P.3077-3093. ( DOI) Abstract: The vertical component ( Z ) of the geomagnetic field observed by ground-based observatories of the International Real-Time Magnetic Observatory Network has been used to analyze the induced Continue Reading

Faraday Signature Of Magnetic Helicity From Reduced Depolarization

div>AXEL BRANDENBURG AND RODION STEPANOV FARADAY SIGNATURE OF MAGNETIC HELICITY FROM REDUCED DEPOLARIZATION (PREPRINT) Abstract: Using one-dimensional models, we show that a helical magnet ic field with an appropriate sign of a helicity can compensate the Faraday depolarization resulting from the superposition of Faraday-rotated polarization planes from a spatially extended source. For radio emission from Continue Reading

An observational test for correlations between cosmic rays and magnetic fields

R.Stepanov, A. Shukurov, A. Fletcher, R. Beck, L. La Porta and F. Tabatabaei An observational test for correlations between cosmic rays and magnetic fields// MNRAS, 2014 437 (3): 2201-2216. (DOI http://mnras.oxfordjournals.org/content/437/3/2201) Abstract: We derive the magnitude of fluctuations in total synchrotron intensity in the Milky Way and M33, from both observations and theory under various Continue Reading

Lifetime of surface features and stellar rotation: A wavelet time-frequency approach

Soon W., Frick P., Baliunas S. Lifetime of surface features and stellar rotation: A wavelet time-frequency approach//Astrophysical Journal Letter. – 1999. – V.510. – N.2 – L132-L138. (DOI) Abstract: We explore subtle variations in disk-integrated measurements spanning ≤ 18 yr of stellar surface magnetism by using a newly developed time-frequency gapped wavelet algorithm. We present Continue Reading

Оценка состояния сердечно-сосудистой системы на основе вейвлет-анализа данных неинвазивных измерений

В 2008 году специалисты Пермской государственной медицинской академии им. академика Е.А.Вагнера и Института механики сплошных сред УрО РАН начали активное сотрудничество в разработке методов медицинской диагностики, основанных на современных алгоритмах анализа сложных нелинейных систем. В статье представлены некоторые новые методики, основанные на использовании вейвлет-анализа и приведены примеры их использования для целей обработки и анализа физиологических данных, характеризующих состояние сердечно-сосудистой системы.