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3. Seafloor mapping field manual for multibeam sonar

Citation

Lucieer, V and Picard, K and Siwabessy, J and Jordan, A and Tran, M and Monk, J, 3. Seafloor mapping field manual for multibeam sonar, Field Manuals for Marine Sampling to Monitor Australian Waters, National Environmental Science Programme, Version 1 (2018) [Contract Report]


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PDF (Przeslawski R, Foster S [Eds.]. 2018. Field Manuals for Marine Sampling to Monitor Australian Waters, Version 1. 2018. Report to the National Environmental Science Programme, Marine Biodiversity Hub. 212 pp. Chapter )
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DOI: doi:10.11636/9781925297669

Abstract

Swath mapping systems use acoustic technology to collect data on the bathymetry (topography) and the backscatter (impedance) of the seafloor (Figure 3.1). These systems can either be mounted on a ship; autonomous underwater vehicle; remotely operated vehicle or a remote surface vehicle. They work by transmitting a sound pulse, called a ping, through a transducer at a specific frequency (or a range of frequencies simultaneously). This same ping is then recorded through a receiver placed very close to the transducer. The elapsed time that the ping takes to reach the seafloor and return to the receiver is used to measure the depth of the water. Certain attributes of the shape of the sound-wave are used to infer characteristics about the seafloor (geomorphology). Typical multibeam echo sounder (MBES) data products include bathymetry (seafloor depth) as well as backscatter intensity, which can provide a metric for seafloor "hardness" and will indicate the substrate type.

Item Details

Item Type:Contract Report
Keywords:seabed mapping, field manual
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Marine Environments
UTAS Author:Lucieer, V (Dr Vanessa Lucieer)
UTAS Author:Monk, J (Dr Jacquomo Monk)
ID Code:124915
Year Published:2018
Deposited By:Ecology and Biodiversity
Deposited On:2018-03-19
Last Modified:2018-03-19
Downloads:0

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