Physics – Geophysics
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3214308s&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 14, CiteID L14308
Physics
Geophysics
2
Electromagnetics: Scattering And Diffraction, Mathematical Geophysics: Time Series Analysis (1872, 4277, 4475), Seismology: Continental Crust (1219), Seismology: Earthquake Source Observations (1240)
Scientific paper
We propose a high-resolution technique for estimating the source time function of a seismic event from only one record. This technique is based on the spectral factorization of the minimum phase wavelet from the most random part of a seismogram: its coda. As the coda non-stationarity is inconsistent with the classical spectral factorization theory, we develop a two-step algorithm: first, the diffuse coda field is whitened to remove the non-stationary attenuation effect; second, the minimum phase wavelet equivalent of the seismic source time function is estimated. Applied to the recordings of the Kursk's wreck, this method gives a source wavelet strikingly similar to the general shape of an underwater explosion, allowing us to infer its depth and yield. Based on the fundamental ``random'' character of diffusive waves, this approach opens up promising applications for new blind deconvolution methods.
Bard Pierre-Yves
Guilbert Jocelyn
Sèbe Olivier
No associations
LandOfFree
Single station estimation of seismic source time function from coda waves: The Kursk disaster does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Single station estimation of seismic source time function from coda waves: The Kursk disaster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single station estimation of seismic source time function from coda waves: The Kursk disaster will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1249736