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Seismic reflection imaging of shallow oceanographic structures ArchiMer
Piete, Helene; Marie, Louis; Marsset, Bruno; Thomas, Yannick; Gutscher, Marc-andre.
Multichannel seismic (MCS) reflection profiling can provide high lateral resolution images of deep ocean thermohaline fine structure. However, the shallowest layers of the water column (z < 150 m) have remained unexplored by this technique until recently. In order to explore the feasibility of shallow seismic oceanography (SO), we reprocessed and analyzed four multichannel seismic reflection sections featuring reflectors at depths between 10 and 150 m. The influence of the acquisition parameters was quantified. Seismic data processing dedicated to SO was also investigated. Conventional seismic acquisition systems were found to be ill-suited to the imaging of shallow oceanographic structures, because of a high antenna filter effect induced by large...
Tipo: Text Palavras-chave: Seismic oceanography; Seismic acquisition system; Seasonal thermocline; Iroise Sea; Gulf of Cadiz; Florida Straits.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00141/25193/23302.pdf
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