FN Archimer Export Format
PT J
TI Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data
BT 
AF KER, Stephan
   LE GONIDEC, Y.
   MARSSET, Bruno
   WESTBROOK, Graham
   GIBERT, D.
   MINSHULL, T. A.
AS 1:1;2:2;3:1;4:1,3;5:2,4;6:3;
FF 1:PDG-REM-GM;2:;3:PDG-REM-GM;4:;5:;6:;
C1 IFREMER, Ctr Brest, F-29280 Plouzane, France.
   Univ Rennes 1, CNRS, UMR 6118, F-35042 Rennes, France.
   Univ Southampton, Natl Oceanog Ctr Southampton, Southampton SO14 3ZH, Hants, England.
   Sorbonne Paris Cite, CNRS, UMR 7154, Inst Phys Globe Paris, F-75238 Paris, France.
C2 IFREMER, FRANCE
   UNIV RENNES, FRANCE
   NOC, UK
   IPGP, FRANCE
SI BREST
SE PDG-REM-GM
   PDG-REM-GM-LGG
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.56
TC 13
UR https://archimer.ifremer.fr/doc/00175/28602/27019.pdf
LA English
DT Article
DE ;Wavelet transform;Gas and hydrate systems;Wave propagation;Acoustic properties;Arctic region
AB In the context of seismic imaging of gas/gas-hydrate systems, the fine-scale structure of subseabed gas-related reflections is assessed by taking advantage of the source signature of the deep-towed high-resolution SYSIF seismic device. We demonstrate the value of an original wavelet-based method and associated multiscale seismic attributes, applied to seismic data recently acquired on the western margin of the Arctic archipelago of Svalbard. From analysis in the wavelet domain, we recognize two types of gas-related reflections associated with submetre-scale distribution of gas. We identify a thin gas-charged layer associated with an apparent normal polarity reflection, and we detect gas patches associated with a reverse-polarity bright spot with frequency-dependent elastic properties at small seismic wavelengths. The results provide valuable information on the scale of features through which gas migrates and resolve ambiguities in the interpretation of the seismic data.
PY 2014
PD MAR
SO Geophysical Journal International
SN 0956-540X
PU Oxford Univ Press
VL 196
IS 3
UT 000331815500015
BP 1466
EP 1470
DI 10.1093/gji/ggt497
ID 28602
ER

EF