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Innovative Approaches to Rapid Archaeological Site Surveying and Evaluation Aggregate Levy Sustainability Fund Project #

Innovative Approaches to Rapid Archaeological Site Surveying and Evaluation Aggregate Levy Sustainability Fund Project # 3837. Richard Bates, Martin Dean, Mark Lawrence Phil Robertson, Fernando Tempera University of St Andrews Louis Atallah, University of Edinburgh.

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Innovative Approaches to Rapid Archaeological Site Surveying and Evaluation Aggregate Levy Sustainability Fund Project #

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  1. Innovative Approaches to Rapid Archaeological Site Surveying and EvaluationAggregate Levy Sustainability FundProject # 3837 Richard Bates, Martin Dean, Mark Lawrence Phil Robertson, Fernando Tempera University of St Andrews Louis Atallah, University of Edinburgh

  2. Innovative Approaches to Rapid Archaeological Site Surveying and Evaluation Project Aim To exploit the potential of geophysical techniques to allow rapid, detailed investigation of submerged archaeological sites and their immediate surroundings Project Objectives • Geophysical equipment appraisal • Development of enhanced geophysical processing techniques • Documentation and evaluation of historical records (on test site – Stirling Castle) • Characterisation of test site and environmental setting surrounding site, design of long term management strategies • Public dissemination of information

  3. Survey Methods – Hardware and Software Hardware Geophysical Tools • Multibeam Bathymetry – Reson 8125 Twin Head • Sidescan sonar – Klein 3000 or equivalent • AGDS – dual frequency • Magnetometry Ground Truth • Images • Diver • Dropdown • ROV • AUV • Samples • Diver • Grab Software • Bathymetry processing • Sidescan image analysis

  4. New Processing Methods (software) • Rapid assessment of large survey areas • Discrimination of artefacts from background noise Methods • Expert system analysis of sidescan or backscatter • Automated approach using scale saliency features for object detection (Atallah et al., 2005) • Combination of backscatter and bathymetry • (Atallah and Probert-Smith, 2005)

  5. Scale Saliency method applied to Belfast Loch Test Site (for site information see Quinn et al., 2005)

  6. Test Sites Artificial Test Site (Plymouth Sound) • mapping of artefacts and common debris Hastings Shingle Bank • aggregate production area • Thomas Lawrence • artificial targets Stirling Castle • comparison with previous data • two year study of change

  7. Artificial Test Site • Build on work accomplished by ADU and Centre for Maritime Archaeology in Belfast Lough • Test site located in Plymouth Sound • Site construction and survey 31 March - 8 April • Site Artefacts to include: ceramic pots, plates, tiles, edged weapons, waterlogged wood, spoil heaps, buckets, bell, chain, tubes • Survey with: Reson 8125 dual head, Submetrix Swathplus, Klein 3000, SEA Echoplus • Site survey methods: offsets, line spacing, ranges

  8. Test Site – Hastings Shingle Bank • Cooperative project with Wessex Archaeology • Area of current and future aggregate extraction • Deploy limited number of larger targets (approx. 1m3) • Survey with wider-area tools – sidescan • Test pattern recognition software

  9. Stirling Castle 70-gun ship of the line built in 1678 at Deptford Part of Samuel Pepy’s regeneration of the Navy Lost with all her crew on the Goodwin Sands in the Great Gale of 1703 Found in 1979 by sports divers Historic site with long history of investigation using geophysical methods Site environmental conditions known to change rapidly Need to manage the site with respect to changes predicted in future environment Isle of Thanet Ramsgate North Sand Head Stirling Castle Goodwin Sands

  10. Stirling Castle – previous data

  11. Stirling Castle – previous data

  12. Stirling Castle – Wide Area Survey

  13. Stirling Castle – AGDS and Sidescan Sonar SEA AGDS – Roughness and Hardness E1-E2 overlaid on Imaginex 858 sidescan (from Lawrence and Bates, 2002)

  14. Stirling Castle 2002 Bathymetry and 1999 Summary Survey Plan

  15. Stirling Castle – Survey Plan 2005-2006 Wide-area environmental setting survey • Swathplus • Klein 3000 Site survey • Reson 8125 dual head • Klein 3000 • AGDS - Echoplus Ground discrimination • ground truth through ROV • Sediment sampling outside of wreck site

  16. Information Dissemination Dedicated web site (next month) Reports Papers Workshops Conferences (national and international)

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