Blending single beam RoxAnn and multi-beam swathe QTC hydro-acoustic discrimination techniques for the Stonehaven area, Scotland, UK

N. Serpetti, Michael Heath, F. Armstrong, U. Witte

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Surface properties of the seabed in a 180 km2 area of coastal waters (14-57 m depth) off northeast Scotland were mapped by hydro-acoustic discrimination using single and multi-beam echosounders linked to signal processing systems (RoxAnn for the single beam, and Questor Tangent Corporation (QTC) Multiview for the multibeam). Subsequently, two ground truthing surveys were carried out, using grab and TV sampling. The RoxAnn and QTC-Multiview outputs showed strong similarity in their classifications of seabed types. Classifications generated by QTC-Multiview were used to supervise those based on seabed roughness and hardness indices produced by the RoxAnn system and thereby develop a ‘blended’ map based on both systems. The resulting hydro-acoustic classes agreed well with a cluster analysis of data on sediment grain sizes from the grab sampling, and indicated that the area could be described by distinct regions of surface texture and surficial sediments ranging from muddy sand to boulders and rock.

LanguageEnglish
Pages442-455
Number of pages14
JournalJournal of Sea Research
Volume65
Issue number4
DOIs
Publication statusPublished - May 2011

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corporations
Scotland
acoustics
surficial sediment
signal processing
sampling
hardness
roughness
cluster analysis
coastal water
sediments
grain size
texture
sand
rocks
methodology
rock
sediment
index

Keywords

  • Sediment acoustic classification; RoxAnn system; QTC-Multiview system; ground truthing survey; seabed mapping; Scotland; UK

Cite this

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title = "Blending single beam RoxAnn and multi-beam swathe QTC hydro-acoustic discrimination techniques for the Stonehaven area, Scotland, UK",
abstract = "Surface properties of the seabed in a 180 km2 area of coastal waters (14-57 m depth) off northeast Scotland were mapped by hydro-acoustic discrimination using single and multi-beam echosounders linked to signal processing systems (RoxAnn for the single beam, and Questor Tangent Corporation (QTC) Multiview for the multibeam). Subsequently, two ground truthing surveys were carried out, using grab and TV sampling. The RoxAnn and QTC-Multiview outputs showed strong similarity in their classifications of seabed types. Classifications generated by QTC-Multiview were used to supervise those based on seabed roughness and hardness indices produced by the RoxAnn system and thereby develop a ‘blended’ map based on both systems. The resulting hydro-acoustic classes agreed well with a cluster analysis of data on sediment grain sizes from the grab sampling, and indicated that the area could be described by distinct regions of surface texture and surficial sediments ranging from muddy sand to boulders and rock.",
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Blending single beam RoxAnn and multi-beam swathe QTC hydro-acoustic discrimination techniques for the Stonehaven area, Scotland, UK. / Serpetti, N.; Heath, Michael; Armstrong, F. ; Witte, U.

In: Journal of Sea Research, Vol. 65, No. 4, 05.2011, p. 442-455.

Research output: Contribution to journalArticle

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