Bull, JM, Quinn, Rory and Dix, JK (1998) Reflection coefficient calculation from marine high resolution seismic reflection (Chirp) data and application to an archaeological case study. MARINE GEOPHYSICAL RESEARCHES, 20 (1). pp. 1-11. [Journal article]
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Chirp sub-bottom profilers produce high-resolution images of the near-surface An attribute of the sea-bed reflection in chirp data are fluctuations in polarity between adjacent traces. Two models are proposed and presented to explain this: the first incorporates changes in an acoustic impedance gradient at the sea bed; the second uses changes in the thickness of the uppermost sediment layer. Mixing of adjacent traces produces a consistent polarity for the sea-bed reflector. Reflection coefficients are calculated, using amplitude information derived from single-traces, and polarity information from trace mixing, with application to a marine archaeological case study. The reflection coefficient calculated for the top of a buried 18th century wooden wreck is -0.26.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Life and Health Sciences|
|Research Institutes and Groups:||Environmental Sciences Research Institute|
Environmental Sciences Research Institute > Maritime Archaeology
|Deposited By:||Dr Rory Quinn|
|Deposited On:||03 Aug 2009 11:11|
|Last Modified:||15 Jun 2011 11:18|
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