Littoral Acoustic Demonstration Center

The Littoral Acoustic Demonstration Center was formed by scientists from the University of Southern Mississippi (USM), the University of New Orleans (UNO), and the Stennis Detachment of the Naval Research Laboratory (NRL), and maintained that structure for most of the duration of this grant. It has...

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Bibliographic Details
Main Author: Rayborn, Grayson H.
Other Authors: UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG
Format: Text
Language:English
Published: 2006
Subjects:
Biological Oceanography
Acoustic Detection and Detectors
Acoustics
*MAMMALS
*ACOUSTIC DETECTION
*AMBIENT NOISE
*ACOUSTIC TRACKING
*AQUATIC ANIMALS
ALGORITHMS
CALIBRATION
MEXICO GULF
ANIMAL COMMUNICATION
AIR GUNS
WHALES
ECHO RANGING
HYDROPHONES
IDENTIFICATION
SHIP NOISE
CODAS
ECHO-LOCATION
SPERM WHALES
VOCALIZATIONS
Orleans
Sperm whale
Online Access:http://www.dtic.mil/docs/citations/ADA443896
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA443896
Description
Summary:The Littoral Acoustic Demonstration Center was formed by scientists from the University of Southern Mississippi (USM), the University of New Orleans (UNO), and the Stennis Detachment of the Naval Research Laboratory (NRL), and maintained that structure for most of the duration of this grant. It has now been expanded to include scientists from the University of Louisiana-Lafayette. The funding that permitted the formation of the consortium was provided by the Office of Naval Research with the aim of studying ambient noise and marine mammals, particularly as each occurs in the Gulf of Mexico. Two successful deployments of hydrophones were made in the Gulf of Mexico under the auspices of consortium members USM and NRL Stennis during the summers of 2001 and 2002. NRL Stennis also assisted in deployments in the Mediterranean Sea in the summers of 2002 and 2003. Minor assistance in one of these deployments (2002) was provided by USM. All three institutions provided assistance with data analysis with UNO providing leadership in several areas including oversight of virtually all of the ambient noise studies. The project also provided financial support for numerous graduate students and resulted in several talks by them as well as theses and dissertations. Goals for marine mammals included their detection, identification, and tracking using bottom-moored hydrophones, although only sperm whale vocalizations have been studied thus far. A new detection algorithm for sperm whale clicks has been developed and used and compared to traditional algorithms. Methods have been developed for the identification of individual sperm whales based on their codas and echo-location clicks. Analysis of sperm whale activity levels has been performed and the effects of ship noise investigated.

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