3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery: The Grace Dieu
3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery: The Grace Dieu
Acoustic imaging and characterisation of buried objects (and in particular archaeological materials) in shallow-water (<5 m) is often unsuccessful owing to problems related to vessel-induced bubble turbulence and the restricted acoustic geometry of the system. A 2D surveying method that tackles these problems has been tested on the known wreck of the Grace Dieu (1418), Henry V’s flagship, currently buried within the inter-tidal sediments of the Hamble River. The wooden hull is recognisable in the seismic sections as a high amplitude anomaly underlain by an acoustic blanking zone. Close survey line spacing (ca. 1 m) allowed the construction of time slices, identifying the ovate plan of the hull. High, predominantly negative, reflection coefficients suggest this anomaly corresponds to degraded oak timbers buried within the sediment. Combining the data enabled the construction of a (pseudo)-3D image, revealing the dimensions and shape of the hull remains for the first time.
Maritime archaeology, Chirp, Shallow water, Buried wood
399-411
Plets, R.M.K
75467a07-f41c-48fb-a53e-42487624287c
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Adams, J.R.
184a058c-d4b1-44fc-9bff-cadee3882bc8
Best, A.I.
cad03726-10f8-4f90-a3ba-5031665234c9
May 2008
Plets, R.M.K
75467a07-f41c-48fb-a53e-42487624287c
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Adams, J.R.
184a058c-d4b1-44fc-9bff-cadee3882bc8
Best, A.I.
cad03726-10f8-4f90-a3ba-5031665234c9
Plets, R.M.K, Dix, J.K., Adams, J.R. and Best, A.I.
(2008)
3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery: The Grace Dieu.
Applied Acoustics, 69 (5), .
(doi:10.1016/j.apacoust.2007.04.004).
Abstract
Acoustic imaging and characterisation of buried objects (and in particular archaeological materials) in shallow-water (<5 m) is often unsuccessful owing to problems related to vessel-induced bubble turbulence and the restricted acoustic geometry of the system. A 2D surveying method that tackles these problems has been tested on the known wreck of the Grace Dieu (1418), Henry V’s flagship, currently buried within the inter-tidal sediments of the Hamble River. The wooden hull is recognisable in the seismic sections as a high amplitude anomaly underlain by an acoustic blanking zone. Close survey line spacing (ca. 1 m) allowed the construction of time slices, identifying the ovate plan of the hull. High, predominantly negative, reflection coefficients suggest this anomaly corresponds to degraded oak timbers buried within the sediment. Combining the data enabled the construction of a (pseudo)-3D image, revealing the dimensions and shape of the hull remains for the first time.
Text
pletsetal2007a.pdf
- Accepted Manuscript
More information
Submitted date: September 2006
Published date: May 2008
Keywords:
Maritime archaeology, Chirp, Shallow water, Buried wood
Identifiers
Local EPrints ID: 49063
URI: http://eprints.soton.ac.uk/id/eprint/49063
ISSN: 0003-682X
PURE UUID: 13883982-9bf1-4f58-a604-c92c19c6d404
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Date deposited: 22 Oct 2007
Last modified: 16 Mar 2024 02:45
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Author:
R.M.K Plets
Author:
A.I. Best
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