Estimation of the source signal characteristics and variability of blue whale calls using a towed array
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Authors
Moore, Therese C.
Subjects
Blue Whale Vocalizations
Signal Characteristics
Source Locations
Towed Array
SOSUS
Monterey Bay National Marine Sanctuary
NPS OAO
Signal Characteristics
Source Locations
Towed Array
SOSUS
Monterey Bay National Marine Sanctuary
NPS OAO
Advisors
Collins, Curtis A.
Chiu, Ching-Sang
Date of Issue
1999-06
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A four-day experiment was conducted to study the feasibility of locating, tracking, and counting blue whales acoustically in the Monterey Bay National Marine Sanctuary (MBNMS) at long ranges using the shore-based NPS Ocean Acoustic Observatory (OAO) hydrophone array. In concert with the shore-based acoustic monitoring, an aircraft was assigned to locate whales and a research vessel was manned with observers and instrumented with a towed hydrophone array to determine whale locations and characterize their vocalizations in the near- field. Two transiting blue whales were observed and their vocalizations were recorded by the towed array in close proximity. In this thesis research, these towed array data were deverberated using modeled-based matched signal processing and least-squares fitting
Type
Thesis
Description
Series/Report No
Department
Organization
Identifiers
NPS Report Number
Sponsors
Funding
Format
ix, 49 p.;28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.