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TitleProcessing of single-channel, high-resolution seismic data collected in the St. Lawrence estuary, Quebec
AuthorDuchesne, M J; Bellefleur, G
SourceGeological Survey of Canada, Current Research (Online) 2007-D1, 2007, 11 pages,
PublisherNatural Resources Canada
Mediaon-line; digital
File formatpdf (Adobe Acrobat Reader)
ProvinceEastern offshore region; Quebec
NTS22B/13; 22B/14; 22C/06; 22C/07; 22C/09; 22C/10; 22C/11; 22C/15; 22C/16; 22F/01; 22F/02; 22F/08; 22G/03; 22G/04; 22G/05; 22G/06
AreaSt. Lawrence River Estuary; Forestville; Baie-Comeau; Matane; Pointe-au-Père; Rimouski; Trois-Pistoles
Lat/Long WENS-69.5000 -67.0000 49.3333 48.1667
Subjectssurficial geology/geomorphology; marine geology; geophysics; regional geology; mapping techniques; geophysical surveys; seismic data; seismic surveys, marine; seismic reflection surveys; seismic profiles, marine; seismic interpretations; sediments; till stratigraphy; bedrock geology; stratigraphic correlations; sedimentary structures; data processing; artifacts; seismic images; Phanerozoic; Cenozoic; Quaternary; Paleozoic
Illustrationsgraphs; spectra; tables; sketch maps; schematic diagrams; seismic sections; seismic profiles
ProgramSecure Canadian Energy Supply
ProgramTargeted Geoscience Initiative (TGI-2), 2003-2005
Released2007 03 01
AbstractWithin the framework of theAppalachian Energy project of the TargetGeosciences Initiative - Part 2, more than 3000 km of single-channel, high-resolution seismic profiles were collected with a sparker source in the St. Lawrence estuary in 2003 and 2004 to map shallow sedimentary series (sediments and the top of the underlying bedrock). The data collected include many artifacts such as short- and long-period multiples. In order to provide, as much as possible, artifact-free sections, a processing flow was developed and applied to all 55 profiles collected. The core of the ten-step flow is a trace-by-trace deconvolution algorithm which allows the compression of the source signature. The processed sections provide improved seismic images that allow accurate picking of key stratigraphic reflectors.