EFFECTS OF MARINE BIOLOGICAL ENVIRONMENT ON COMPLIANT GRATING ACOUSTIC LENSES

Abstract

Self-Contained Underwater Breathing Apparatus (SCUBA) observations were conducted on a large, experimental sound device placed in 40 feet of water in San Diego Bay for one month. A succession of fouling populations settled on the equipment, and an attraction to the device by crabs and fish was evidenced. The possible effects of such biota on instrument function are treated on the basis of work published concerning the effects of fouling and other organisms on transducer performance and underwater sound. The existing literature was surveyed to indicate the nature, intensity, and normal seasonal sequence of fouling expected in the coastal waters of the San Diego area. Possible preventive measures are described and discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 06, 1961
Accession Number
AD0260287

Entities

People

  • E.g. Barham

Organizations

  • Navy Electronics Laboratory

Tags

DTIC Thesaurus Topics

  • Acoustic Lenses
  • Bays
  • Breathing Apparatus
  • Environment
  • Intensity
  • Lenses
  • Literature
  • Mechanical Equipment
  • Observation
  • Respiration
  • San Diego Bay
  • Sequences
  • Transducers
  • Underwater Breathing Apparatus
  • Underwater Sound

Fields of Study

  • Environmental science

Readers

  • Acoustical Oceanography.
  • Materials Science
  • Systems Analysis and Design