nerc.ac.uk

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.. 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.

Before downloading, please read NORA policies.
[img]
Preview
PDF
pdf_paper.pdf

Download (1MB) | Preview

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

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...