3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery - a case study


Plets, R.M.K., Dix, J.K., Adams, J.R., Bull, J.M., Henstock, T., Gutowski, M. and Best, A.I. (2006) 3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery - a case study. In, Jesus, S.N. and Rodriguez, O.C. (eds.) Proceedings of the 8th European Conference on Underwater Acoustics, 12-15 Jun 2006. 8th European Conference on Underwater Acoustics Carvoeiro, Portugal, ECUA Secretariat, 757-762.

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Description/Abstract

This paper compares a 2D and 3D-Chirp geophysical investigation of a buried shipwreck: the Grace Dieu (1418). The site, covered by 2-5m of water, is buried within muddy inter-tidal sediments. At exceptionally low tides, a few of the marginal timbers are exposed. The marine survey utilised a 2D-Chirp systems with a DGPS navigational system, and a 3-Chirp system with RTK-positioning capability. In both cases, the source was towed over the site by divers. Close survey line spacing, accurate navigation and decimetre scale resolution data enabled the construction of a pseudo- and full 3D-image of the site, which were calibrated against an RTK-GPS-terrestrial survey. The exercise demonstrated the improved spatial resolution provided by the 3D-Chirp system and the ability of a well-constrained 2D survey to produce a pseudo-3D reconstruction of the gross ship structure.

Item Type: Book Section
Keywords: chirp, wood detection, archaeology
Subjects: Q Science > Q Science (General)
C Auxiliary Sciences of History > CC Archaeology
Q Science > QE Geology
G Geography. Anthropology. Recreation > GC Oceanography
Divisions: University Structure - Pre August 2011 > School of Humanities > Archaeology
University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
University Structure - Pre August 2011 > National Oceanography Centre (NERC)
ePrint ID: 39914
Date Deposited: 03 Jul 2006
Last Modified: 27 Mar 2014 18:25
URI: http://eprints.soton.ac.uk/id/eprint/39914

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