A Closing, Multi-Sampling Net System for the Study of the Deep Scattering Layer

Abstract

A system has been devised to allow practically simultaneous biological sampling of the ocean at a number of different depths. It consists of a single rope from which are suspended a number of net frames that can be completely closed in quick succession by means of messengers. The system works satisfactorily at a towing speed of 3 knots and at depths down to 800 metres, and gives reliable results because the nets do not collect stray samples during descent or recovery.

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Document Details

Document Type
Technical Report
Publication Date
Dec 15, 1970
Accession Number
AD0879592

Entities

People

  • Anselmo Chiarabini

Organizations

  • SACLANT ASW Research Centre

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Aquatic Organisms
  • Atlantic Ocean
  • Deep Scattering Layers
  • Government (Foreign)
  • Governments
  • Instructions
  • Materials
  • Oceans
  • Sampling
  • Scattering

Readers

  • Electrical Engineering
  • Marine Hydrodynamics
  • Systems Analysis and Design