Author(s): G. E. Jones, R. E. Cumming & P. R. Hunt
The investigation of wreck sites is of great interest to archaeologists, however
site investigation often needs to be conducted within a limited budget.
often be time consuming as the result of the wreck being poorly defined, or
buried in the sediment with little surface indication of their location.
The majority of true wreck investigation, archaeological appraisal and
recording is conducted and will likely continue to be conducted by marine
This is often essential for the precise recording of artefacts; however,
there is often an initial need to locate the wreck site and/or its subsequent extent.
Additionally, visibility and available bottom-time may severely hamper the diver
in the detection of all seabed evidence.
Within the paper, it is intended to look at the relative value of
magnetometers, sidescan sonar, sub-bottom profilers and swathe bathymetric
systems in offering assistance to the diver within their initial searches and within
an appraisal of the extent of the heritage site.
This will be achieved by examining
activities over two wreck sites; those of the Earl of Abergavenny (1805), where
magnetometer and sonar surveys were compared against the known location of
artefacts; and secondly, an investigation of an area of seabed, believed to be the
site of the Bellona (1779), using magnetometer, sidescan sonar and sub-bottom
Conclusions are drawn on the effectiveness of the sensors used, the benefits
of an integrated approach and reviews the potential offered by alternatives, such
as the emerging technologies offered by swathe bathymetry systems.
hydrography, sidescan sonar, sub-bottom profiling, magnetic
surveys, swathe bathymetry, marine archaeology, seabed mapping.
Size: 2,087 kb
Paper DOI: 10.2495/MH050181
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