Skip to content

Research at St Andrews

Modelling three-dimensional directivity of sound scattering by Antarctic krill: progress towards biomass estimation using multibeam sonar

Research output: Contribution to journalArticle

DOI

Author(s)

George R. Cutter, Josiah S. Renfree, Martin J. Cox, Andrew Stuart Brierley, David A. Demer

School/Research organisations

Abstract

Target strength (TS) estimation is a principal source of uncertainty in acoustic surveys of Antarctic krill (Euphausia superba). Although TS is strongly dependent on krill orientation, there is a paucity of information in this regard. This paper considers the potential for narrow-bandwidth, multibeam-echosounder (MBE) data to be used for estimating the orientations of krill beneath survey vessels. First, software was developed to predict MBE measurements of the directivity patterns of acoustic scattering from individual or aggregated krill in any orientation. Based on the distorted-wave, Born approximation model (DWBA), scattering intensities are predicted vs. MBE angles for specified distributions of krill orientations (pitch, roll, and yaw angles) and swarm densities. Results indicate that certain distributions of orientations, perhaps indicative of particular behaviour, should be apparent from the sonar data. The model results are compared with measurements on krill made using a 200-kHz MBE deployed from a small craft off Cape Shirreff, Livingston Island, Antarctica, in summer 2006. The stochastic DWBA model is then invoked to explain disparities between the model predictions and MBE measurements.

Close

Details

Original languageEnglish
Pages (from-to)1245-1251
Number of pages7
JournalICES Journal of Marine Science
Volume66
Issue number6
DOIs
Publication statusPublished - Jul 2009

    Research areas

  • Antarctic krill, directivity, incidence angle, multibeam sonar, orientation, target strength, TARGET STRENGTH MEASUREMENTS, WAVE BORN APPROXIMATION, IMPROVED PARAMETERIZATION, ACOUSTIC SCATTERING, BROAD-BANDWIDTH, FISH SCHOOLS, 120 KHZ, ORIENTATION, BEHAVIOR, AVOIDANCE

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Spatial variability in total and organic mercury levels in Antarctic krill Euphausia superba across the Scotia Sea

    Seco, J., Xavier, J. C., Coelho, J. P., Pereira, B., Tarling, G., Pardal, M. A., Bustamante, P., Stowasser, G., Brierley, A. S. & Pereira, M. E., Apr 2019, In : Environmental Pollution. 247, p. 332-339 8 p.

    Research output: Contribution to journalArticle

  2. Internal lee waves and baroclinic bores over a tropical seamount shark ‘hot-spot’

    Hosegood, P. J., Nimmo-Smith, W. A. M., Proud, R., Adams, K. & Brierley, A. S., Mar 2019, In : Progress in Oceanography. 172, p. 34-50 17 p.

    Research output: Contribution to journalArticle

  3. Use of micronekton data and models to improve ecology of top predators

    Proud, R. & Brierley, A. S., 30 Nov 2018, Zenodo. 23 p.

    Research output: Book/ReportCommissioned report

Related by journal

  1. Ecological best practice in decommissioning: a review of scientific research

    Fortune, I. S. & Paterson, D. M., 27 Sep 2018, In : ICES Journal of Marine Science. Advance article

    Research output: Contribution to journalReview article

  2. From siphonophores to deep scattering layers: uncertainty ranges for the estimation of global mesopelagic fish biomass

    Proud, R., Handegard, N. O., Kloser, R., Cox, M. & Brierley, A. S., 19 Apr 2018, In : ICES Journal of Marine Science. Advance Article

    Research output: Contribution to journalArticle

  3. Disentangling the relative merits and disadvantages of parentage analysis and assignment tests for inferring population connectivity

    Christie, M., Meirmans, P., Gaggiotti, O. E., Toonen, R. & White, C., 1 Jul 2017, In : ICES Journal of Marine Science. 74, 6, p. 1749-1762

    Research output: Contribution to journalArticle

  4. Foraging behaviour and prey consumption by grey seals (Halichoerus grypus)-spatial and trophic overlaps with fisheries in a marine protected area

    Vincent, C., Ridoux, V., Fedak, M. A., McConnell, B. J., Sparling, C. E., Leaute, J. P., Jouma'a, J. & Spitz, J., 1 Nov 2016, In : ICES Journal of Marine Science. 73, 10, p. 2653-2665 13 p.

    Research output: Contribution to journalArticle

  5. A development of ecological risk screening with an application to fisheries off SW England

    Cotter, J., Lart, W., de Rozarieux, N., Kingston, A., Caslake, R., Le Quesne, W., Jennings, S., Caveen, A. & Brown, M., Mar 2015, In : ICES Journal of Marine Science. 73, 3, p. 1092-1104 13 p.

    Research output: Contribution to journalArticle

Related by journal

  1. ICES Journal of Marine Science (Journal)

    Simon Northridge (Member of editorial board)
    2016 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  2. ICES Journal of Marine Science (Journal)

    Sophie Caroline Smout (Editor)
    1 Dec 201530 Dec 2015

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  3. ICES Journal of Marine Science (Journal)

    Simon Northridge (Editor)
    20122015

    Activity: Publication peer-review and editorial work typesEditor of research journal

  4. ICES Journal of Marine Science (Journal)

    Sophie Caroline Smout (Reviewer)
    20112013

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

ID: 3426441