Solid Earth Discussions www.solid-earth-discuss.net 1869-9537 4 1 2012 10.5194/sed-4-131-2012 http://www.solid-earth-discuss.net/4/131/2012/ http://www.solid-earth-discuss.net/4/131/2012/sed-4-131-2012.html http://www.solid-earth-discuss.net/4/131/2012/sed-4-131-2012.pdf 131 172 2012-01-20 Geomagnetic jerks characterization via spectral analysis B. Duka bejo.duka@unitir.edu.al A. De Santis M. Mandea A. Isac E. Qamili Faculty of Natural Sciences, University of Tirana, Tirana, Albania Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy Universita' G. D'Annunzio, Chieti, Italy Directorate for Strategy and Programmes, Centre National d'Etudes Spatiale, Paris, France European Center for the Arctic, Université de Versailles, Guyancourt, France Geological Institute of Romania, Bucharest, Romania In this study we have applied spectral techniques to analyze geomagnetic field time-series provided by observatories, and compared the results with those obtained from analogous analyses of synthetic data estimated from models. Then, an algorithm is here proposed to detect the geomagnetic jerks in time-series, mainly occurring in the Eastern component of the geomagnetic field. Applying such analysis to time-series generated from global models has allowed us to depict the most important space-time features of the geomagnetic jerks all over the globe, since the beginning of XXth century. 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