Backscatter responses and resolution considerations in archaeological side-scan sonar surveys: a control experiment
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Publication Details
Output type: Journal article
Author list: Quinn R, Dean M, Lawrence M, Liscoe S, Boland D
Publisher: Elsevier
Publication year: 2005
Journal: Journal of Archaeological Science (0305-4403)
Volume number: 32
Issue number: 8
Start page: 1252
End page: 1264
Number of pages: 13
ISSN: 0305-4403
eISSN: 1095-9238
Languages: English-Great Britain (EN-GB)
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Open access status: closed
Abstract
The backscatter responses of submerged archaeological material remain poorly Understood, To address this, a control experiment was conducted in Belfast Lough during July and August 2001. A selection of material and targets was arranged oil the seabed in varying orientations. in an attempt to replicate the situation found oil a range of archaeological sites where material is exposed on the seafloor. Repeat side-scan sonar surveys of the control array were conducted at variable ranges and fish heights to examine the backscatter responses and resolution of three commercially available side-scan sonar systems, Results indicate that the electro-acoustic specification of the pulse length and the beam angle of the acoustic Sources govern the theoretical resolution of side-scan data. Backscatter data from the control experiment indicate both organic (wood and leather) and inorganic (metals, ceramics, glass and varying aggregate and ballast grades) natural and man-made materials can be imaged using side-scan sonar and a wide variety of archaeological material types and concentrations may be differentiated by their backscatter responses, (c) 2005 Elsevier Ltd. All rights reserved.
Keywords
control experiment, shipwreck, side-scan sonar, underwater archaeology
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