Acoustical Deterrence Of Harbor Porpoises

Frazier, Sean; Guldenstern, Michael; Knights, Elissa; Mayhew, Cordelia

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Acoustical Deterrence Of Harbor Porpoises

1994
By Frazier, Sean ; Guldenstern, Michael ; Knights, Elissa ; ...
Series: UNHMP-AR-SG 94-9

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Personal Author:

Frazier, Sean ; Guldenstern, Michael ; Knights, Elissa ; Mayhew, Cordelia
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; Sea Grant
Sea Grant Program:

NHU (New Hampshire Sea Grant)
Description:

Students have worked to develop an acoustic deterrent for reducing the incidental take of harbor porpoises ("Phocoena phocoena") by sink-gillnets in the Gulf of Maine. They designed an autonomous sound signal device to be attached to sink- gillnets. The signal is broadcast for one millisecond at 500 millisecond intervals. At this rate the expected battery life is 72 hours; easy batter maintenance and access are provided. The electronics are encased in a rugged, corrosion-resistant housing of PVC, stainless steel, brass, and urethane.
Series:

UNHMP-AR-SG 94-9
Sea Grant Document Number:

NHU-T-94-004
Document Type:

Technical Report
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

urn:sha256:66cdd85467389aab930f295747d76a7818c5c52d81145f28216baeac6be8b278
Download URL:

https://repository.library.noaa.gov/view/noaa/42147/noaa_42147_DS1.pdf
File Type:

[PDF - 11.38 MB ]

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