Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1370
AuthorsBartosch, T.* 
Seidl, D.* 
TitleSpectrogram analysis of selected tremor signals using short-time Fourier transform and continuous wavelet transform
Issue DateJun-1999
Series/Report no.42/3
URIhttp://hdl.handle.net/2122/1370
Keywordsspectrogram
wavelet transform
broadband tremor
Subject Classification04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques 
AbstractAmong a variety of spectrogram methods Short-Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) were selected to analyse transients in non-stationary tremor signals. Depending on the properties of the tremor signal a more suitable representation of the signal is gained by CWT. Three selected broadband tremor signals from the volcanos Mt. Stromboli, Mt. Semeru and Mt. Pinatubo were analyzed using both methods. The CWT can also be used to extend the definition of coherency into a time-varying coherency spectrogram. An example is given using array data from the volcano Mt. Stromboli.
Appears in Collections:Annals of Geophysics

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