000	01994nam  2200301za 4500
001	9.821385
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008	160720s2011    onc|||||o    f000 0 eng d
040	|aCaOODSP|beng
041	|aeng|bfre
043	|an-cn---
086	1 |aD68-6/236-2011E-PDF
100	1 |aFawcett, John A.
245	10|aNumerical modelling of coherent broadband pulses for seismic exploration |h[electronic resource] / |cby John Fawcett.
260	|a[Ottawa] : |bDefence Research and Development Canada, |cc2011.
300	|ax, 18 p. : |btables, figures.
490	1 |aTechnical Memorandum ; |v2011-236
500	|a"November 2011."
504	|aIncludes bibliographical references.
520	|aAs part of the Offshore Energy Environmental Research (OEER)/DRDC Atlantic project “Feasibility of a Marine Vibroseis System to Minimize Potential Impacts of Seismic Surveying on Commercial Marine Invertebrates”, DRDC Atlantic has been investigating the possibility and technical feasibility of using coherent broadband sources with complex waveforms (followed by matched-filtering) to replace high amplitude impulsive sources used in marine seismic surveys. This report discusses a MATLAB implementation of an acousto-elastic wavenumber algorithm for layered geoacoustic media. This code is then used to generate broadband time series for different geological configurations and incident waveforms. The relative performances of different impulsive and extended-time broadband sources are investigated. As well, the effects of the upper air/water interface and the inclusion of attenuations in the elastic layers are modelled.
692	07|2gccst|aTechnical reports
693	4|aSeismic
693	4|aModelling
710	2 |aDefence R&D Canada.
830	#0|aTechnical memorandum (Defence R&D Canada)|v2011-236|w(CaOODSP)9.820564
856	40|qPDF|s977 KB|uhttps://publications.gc.ca/collections/collection_2016/rddc-drdc/D68-6-236-2011-eng.pdf