FN Archimer Export Format
PT J
TI Multiscale seismic attributes: source-corrected wavelet response and application to high-resolution seismic data
BT 
AF KER, Stephan
   LE GONIDEC, Yves
   GIBERT, Dominique
AS 1:1,2;2:3;3:2;
FF 1:PDG-REM-GM-LGG;2:;3:;
C1 IFREMER, Ctr Brest, Dept Geosci Marines, F-29280 Plouzane, France.
   Inst Phys Globe Paris CNRS UMR 7154, F-75238 Paris, France.
   Univ Rennes 1, Geosci Rennes CNRS UMR 6118, F-35042 Rennes, France.
C2 IFREMER, FRANCE
   IPGP, 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 2.85
TC 10
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/00090/20155/17828.pdf
LA English
DT Article
CR ERIG 3D
BO Pourquoi pas ?
DE ;Wavelet transform;Wave propagation;Acoustic properties
AB A wavelet-based method was presented in a previous work to introduce multiscale seismic attributes for high-resolution seismic data. Because of the limited frequency bandwidth of the seismic source, we observed distortions in the seismic attributes based on the wavelet response of the subsurface discontinuities (Le Gonidec et al.). In this paper, we go further in the seismic source-correction by considering L´evy alpha-stable distributions introduced in the formalism of the continuous wavelet transform (CWT). The wavelets are Gaussian derivative functions (GDF), characterized by a derivative order. We show that a high-resolution seismic source, after a classical signature processing, can be taken into account with a GDF. We demonstrate that in the framework of the Born approximation, the CWT of a seismic trace involving such a finite frequency bandwidth can be made equivalent to the CWT of the impulse response of the subsurface and is defined for a reduced range of dilations.We apply the method for the SYSIF seismic device (Marsset et al.; Ker et al.) and show that the source-corrections allow to define seismic attributes for layer thicknesses in the range [24; 115 cm]. We present the analysis for two seismic reflectors identified on a SYSIF profile, and we show that the source-corrected multiscale analysis quantifies their complex geometries.
PY 2012
PD SEP
SO Geophysical Journal International
SN 0956-540X
PU Wiley-blackwell
VL 190
IS 3
UT 000307571100033
BP 1746
EP 1760
DI 10.1111/j.1365-246X.2012.05601.x
ID 20155
ER

EF