Characterization of Underwater Sounds Produced by Bucket Dredging Operations

Abstract

This technical note presents a characterization of underwater sounds produced by bucket dredging operations in Cook Inlet, Alaska. Both continuous sounds, such as those produced by propellers, pumps, and generators, and repetitive sounds produced by particular dredging events (e.g., dredge bucket striking the channel bottom,jaws of bucket clamping shut) are potential sources of underwater noise. This note examines the intensity, periodicity, and attenuation of emitted sounds from bucket dredging operations and how they are influenced by factors including substrate type, hydrodynamic conditions, equipment maintenance, and skill of the dredge plant operator.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADA394275

Entities

People

  • Charles Dickerson
  • Douglas G. Clarke
  • Kevin J. Reine
  • Robert M. Engler

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Ambient Noise
  • Audio Amplifiers
  • Data Analysis
  • Detection
  • Dredging
  • Frequency
  • Inverters
  • Laptop Computers
  • Materials
  • Measurement
  • Navigation
  • Noise
  • Power Supplies
  • Sound Pressure
  • Suspended Sediments
  • Underwater Sound
  • Uninterruptible Power Supplies

Readers

  • Acoustical Oceanography.
  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Mathematics or Statistics