2007
DOI: 10.1111/j.1365-246x.2007.03417.x
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Polarization analysis in the wavelet domain based on the adaptive covariance method

Abstract: S U M M A R YWe present an improved method for computing polarization attributes of particle motion from multicomponent seismic recordings in the time-frequency domain by using the continuous wavelet transform. This method is based on the analysis of the covariance matrix. We use an approximate analytical formula to compute the elements of the covariance matrix for a time window which is derived from an averaged instantaneous frequency of the multicomponent record. The length of the time-window is automaticall… Show more

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Cited by 59 publications
(27 citation statements)
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“…The proposed method presents some advantages relative to other methods based on the CWT (Diallo et al 2005;Diallo et al, 2006;Kulesh et al, 2007). The signal can be very accurately recovered from the time-frequency domain to the time domain, while any real mother wavelet can be used.…”
Section: Discussionmentioning
confidence: 90%
See 1 more Smart Citation
“…The proposed method presents some advantages relative to other methods based on the CWT (Diallo et al 2005;Diallo et al, 2006;Kulesh et al, 2007). The signal can be very accurately recovered from the time-frequency domain to the time domain, while any real mother wavelet can be used.…”
Section: Discussionmentioning
confidence: 90%
“…This is the reason why a time-frequency polarization analysis seems to be a more appropriate alternative in order to separate the different phases in the wavefield. A similar aim guided the studies of Diallo et al (2005Diallo et al ( , 2006 and Kulesh et al (2007Kulesh et al ( , 2008, where the time-frequency polarization analysis is carried out using the Continuous Wavelet Transform (CWT).…”
Section: Introductionmentioning
confidence: 99%
“…Note that similar angular parameters to orientate the major displacement were also called dip or inclination and strike or azimuth by others authors as [1,4,5], not to be mistaken for the parameters defined in the next paragraph to orientate the polarization plane.…”
Section: Seismic Wave Polarization Parameter Systemmentioning
confidence: 99%
“…Still more quantitative approaches were developed e.g. [1][2][3][4][5]. However, each author used his own parameters and appellations depending on the type of wave to analyse.…”
Section: Introductionmentioning
confidence: 99%
“…Analysis of the particle motions of seismic waves is an effective method to identify these waves, and several methods of polarization analysis have been proposed (e.g., Flinn, 1965;Benhama et al, 1988;Moriya et al, 1994;Moriya and Niitsuma, 1996;Greenhalgh et al, 2005;Diallo et al, 2006;Kulesh et al, 2007). Information about polarization can be used for various subsurface measurements; it has been applied to imaging of subsurface structures in geothermal fields (e.g., Soma et al, 1997Soma et al, , 2002Soma et al, , 2007.…”
Section: Introductionmentioning
confidence: 99%