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- W2056578310 abstract "Separation of a seismogram into its individual constitutive phases (Pand S-wave arrivals, surface waves, etc.) is a long-standing problem. In this letter, we use a high-resolution time-frequency transform to achieve this and reconstruct their individual waveforms in the time domain. The procedure is illustrated using microseismic events recorded during a hydraulic fracturing treatment. The synchrosqueezing transform is an extension of the continuous wavelet transform combined with frequency reassignment. Its high-resolution time-frequency decompositions allow for separation and identification of Pand S-waves with subtly different frequency contents that would not be recoverable using short-term Fourier transforms due to its smearing in the frequency domain. It is an invertible transform, thus allowing for signal reconstruction in the time domain after signal separation. The same approach is applicable to other seismic signals such as resonance frequencies and long-period events and offers promising new possibilities for enhanced signal interpretation in terms of underlying physical processes." @default.
- W2056578310 created "2016-06-24" @default.
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- W2056578310 date "2015-02-01" @default.
- W2056578310 modified "2023-10-03" @default.
- W2056578310 title "Body Wave Separation in the Time-Frequency Domain" @default.
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- W2056578310 doi "https://doi.org/10.1109/lgrs.2014.2342033" @default.
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