Accession Number:

AD0879592

Title:

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

Descriptive Note:

Technical memo.

Corporate Author:

SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s):

Report Date:

1970-12-15

Pagination or Media Count:

13.0

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.

Subject Categories:

  • Biological Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE