Underwater sound measurements of high frequency sonars using a seabedmounted recorder

Authors

  • Graham Warner JASCO Applied Sciences, 2305-4464 Markham St, BC V8Z 7X8, Canada
  • Andrew McCrodan JASCO Applied Sciences, 2305-4464 Markham St, BC V8Z 7X8, Canada
  • Jeff MacDonnell JASCO Applied Sciences, 202-32 Troop Ave., NS B3B 1Z1, Canada
  • Eric Lumsden JASCO Applied Sciences, 202-32 Troop Ave., NS B3B 1Z1, Canada

Keywords:

Acoustic variables measurement, Architectural acoustics, Underwater acoustics, Absorption loss, Center frequency, Chukchi Sea, High frequency sonar, Low-frequency sounds, Marine survey, Multi-channel, Multibeam sonar, Single-beam, Sound level, Source level, Statoil

Abstract

The regulatory permit for Statoil USA E&P Inc.'s 2011 marine survey program in the Alaskan Chukchi Sea required underwater sound measurements of high and low frequency sound sources used in the program. A seabed-mounted Autonomous Multichannel Acoustic Recorder (AMAR) was used to accurately measure high frequency sonar sound levels. The AMAR recorded 16 bit samples at 687.5 kHz for 27 hours. Sound levels from in- and out-of-beam pulses were back-propagated using spherical spreading and absorption loss at the center frequency. Sonar pulses were detected on all five track lines for the side-scan sonar, lines offset 0, 50, and 100 m for the multibeam sonar, and lines offset 0 and 50 m for the single-beam sonar. Received levels were back-propagated to estimate source level versus angle off broadside for the side-scan and multibeam sonars and versus angle off vertical for the single-beam sonar.

Additional Files

Published

2012-09-01

How to Cite

1.
Warner G, McCrodan A, MacDonnell J, Lumsden E. Underwater sound measurements of high frequency sonars using a seabedmounted recorder. Canadian Acoustics [Internet]. 2012 Sep. 1 [cited 2026 May 5];40(3):86-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2552

Issue

Vol. 40 No. 3 (2012)

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.