FN Archimer Export Format
PT J
TI Multiscale seismic attributes: A wavelet-based method and its application to high-resolution seismic and ground truth data
BT 
AF KER, Stephan
   LE GONIDEC, Yves
   GIBERT, D.
   MARSSET, Bruno
AS 1:1,2;2:3;3:2;4:1;
FF 1:PDG-REM-GM-LGG;2:;3:;4:PDG-REM-GM-LGG;
C1 IFREMER, Ctr Brest, Dept Marine Geosci, F-29280 Plouzane, France.
   CNRS, Inst Phys Globe Paris, Sorbonne Paris Cite, UMR 7154, F-75238 Paris, France.
   Univ Rennes 1, CNRS, UMR 6118, F-35042 Rennes, France.
C2 IFREMER, FRANCE
   CNRS, FRANCE
   UNIV RENNES, FRANCE
SI BREST
   AUTRE
SE PDG-REM-GM-LGG
   UNIV-FRANCAISE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.42
TC 12
TU Centre national de la recherche scientifique
   Institut National de l'Information Géographique et Forestière
   Institut de physique du globe
   Université Paris Diderot
   Université Pierre et Marie Curie
   Université de La Réunion
   Université de Rennes 1
UR https://archimer.ifremer.fr/doc/00049/15994/13449.pdf
LA English
DT Article
CR ERIG 3D
BO Pourquoi pas ?
DE ;Wavelet transform;Seismic attenuation;Wave propagation;Acoustic properties
AB We propose a wavelet-based method to characterize acoustic impedance discontinuities from a multiscale analysis of seismic reflected waves. Our approach relies on the analysis of ridge functions which contain most of the information of the wavelet transform in a sparse support. This method falls in the framework of the wavelet response (WR) introduced by Le Gonidec et al. which analyses the impedance multiscale behaviour by propagating dilated wavelets into the medium. We further extend the WR by considering its application to broad-band seismic data. We take into account the bandpass filter effect related to the limited frequency range of the seismic source. We apply the method to a deep-water seismic experiment performed in 2008 during the ERIG3D cruise to demonstrate the potential of ridge functions as multiscale seismic attributes. In conjunction to the analysis of seismic data acquired by the deep-towed SYSIF system (200–2200 Hz), we use ground truth data to characterize the fine scale structure of superficial sediments by using the continuous wavelet transform (CWT). The availability of in situ measurements allows to validate the relationship between CWT and WR and to estimate the attenuation of seismic waves into the sediments. Once validated, the method is applied on a whole seismic profile and WR ridge functions are computed for two particular reflectors. The reflector thicknesses fall below the resolution limit of the seismic experiment making the WR seismic attributes a super-resolution method.
PY 2011
PD NOV
SO Geophysical Journal International
SN 0956-540X
PU Wiley-blackwell
VL 187
IS 2
UT 000297116200035
BP 1038
EP 1054
DI 10.1111/j.1365-246X.2011.05207.x
ID 15994
ER

EF