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.; Best, A.I. ORCID: https://orcid.org/0000-0001-9558-4261. 2006 3D reconstruction of a shallow archaeological site from high-resolution acoustic imagery - a case study. In: Jesus, S.N.; Rodriguez, O.C., (eds.) Proceedings of the 8th European Conference on Underwater Acoustics, 12-15 Jun 2006. Carvoeiro, Portugal, ECUA Secretariat, 757-762.

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Abstract/Summary

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:	Publication - Book Section
Additional Keywords:	chirp, wood detection, archaeology
Date made live:	03 Jul 2006 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/139914

Item Type:

Publication - Book Section

Additional Keywords:

chirp, wood detection, archaeology

Date made live:

03 Jul 2006 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/139914