Accession Number:

ADA018689

Title:

A Summary Report of Progress in the Ocean Acre Program,

Descriptive Note:

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CONN NEW LONDON LAB

Personal Author(s):

Report Date:

1974-01-30

Pagination or Media Count:

53.0

Abstract:

The Ocean Acre program is a long-term, multidiscipline research project designed to study the acoustic and biological characteristics of the Deep Scattering Layers DSL in a one-degree quadrangle the Acre of open ocean water located near Bermuda. During the fourteen cruises in the area, more than 300 fish species from 80 families were collected. Approximately 90 of these specimens belong to the following four families Myctophidae, melamphaidae, sternoptychidae, and gonostomatidae. Acoustic measurements taken at discrete frequencies from 1.3 to 15.5 kHz showed that the scattering strengths and depths of the DSL remained fairly constant from day-to-day and night-to-night. A mathematical model has been developed that provides a computer printout of scattering strengths and resonant frequencies. A comprehensive bibliography and a listing of the various research investigations being carried out with Ocean Acre material follow the text.

Subject Categories:

  • Biology
  • Biological Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE