Examining the Movement of the Common Spider Conch Lambis lambis in Shallow Water of a Northeastern Indian Ocean Atoll Using Passive Acoustic Tracking

AbstractShallow water acoustics provide a means for monitoring and surveillance of near-shore environments. This paper describes the current and future capabilities of the low- to high-frequency Hawaii Experimental Acoustics Range (HEAR) that was designed to facilitate a wide range of different shallow water acoustics experiments and allow researchers from various institutions to test various array components and configurations. HEAR is a portable facility that consists of multiple hydrophones (12‐16) cabled independently to a common central node. The design allows for variable array configurations and deployments in three modes: experimental (off boats and piers), autonomous, and cabled. An application of HEAR is illustrated by the results from a deployment at Makai Research Pier, Oahu, Hawaii. In this deployment, HEAR was configured as a long-baseline range of two volumetric subarrays to study passive acoustic tracking capabilities in a shallow water environment.

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Shallow water crabs from the Western Indian Ocean: Portunoidea and Xanthoidea excluding Pilumnidae (Crustacea Decapoda Brachyura)

Tropical Zoology ◽

10.1080/03946975.1999.10539377 ◽

1999 ◽

Vol 12 (1) ◽

pp. 9-66 ◽

Cited By ~ 9

Author(s):

V. Neumann ◽

V. A. Piridonov

Keyword(s):

Indian Ocean ◽

Shallow Water ◽

Western Indian Ocean

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Passive Acoustic Tracking of Cetaceans using Chirplet Transform

OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean ◽

10.1109/oceanskobe.2008.4530916 ◽

2008 ◽

Author(s):

Farzad FarhadZadeh ◽

Hamidreza Amindavar

Keyword(s):

Acoustic Tracking ◽

Chirplet Transform ◽

Passive Acoustic

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Hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha and St. Helena

Marine Biodiversity Records ◽

10.1017/s1755267215001256 ◽

2015 ◽

Vol 8 ◽

Cited By ~ 1

Author(s):

Horia R. Galea

Keyword(s):

Shallow Water ◽

New Records ◽

Present Report ◽

Tristan Da Cunha ◽

Gough Island ◽

The Common ◽

St Helena ◽

World Records ◽

Second World

The present report provides the first account of the shallow water hydroids of St. Helena, which comprises 17 species, and adds nine new records to the hydrozoan fauna of the Tristan da Cunha group of islands, raising their number to 34. A total of 34 species, belonging to five families of Anthoathecata and eight families of Thecata, are discussed herein. Although distributional data are given for each species, brief diagnoses are provided for the lesser known or unidentifiable species, and the common taxa are occasionally accompanied by succinct remarks. Illustrations are provided for nearly all species in order to justify their identification and to facilitate identification by others.Fiordlandia protectaandFilellum bouvetensis,both from Gough Island, represent the second world records and extend their known area of distribution.

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Measuring the Marine Soundscape of the Indian Ocean with Southern Elephant Seals Used as Acoustic Gliders of Opportunity

Journal of Atmospheric and Oceanic Technology ◽

10.1175/jtech-d-16-0124.1 ◽

2017 ◽

Vol 34 (1) ◽

pp. 207-223 ◽

Cited By ~ 6

Author(s):

Dorian Cazau ◽

Julien Bonnel ◽

Joffrey Jouma’a ◽

Yves le Bras ◽

Christophe Guinet

Keyword(s):

Indian Ocean ◽

Low Frequency ◽

Sound Field ◽

Elephant Seals ◽

Ambient Sound ◽

Southern Elephant Seals ◽

Operational Systems ◽

The Indian Ocean ◽

Passive Acoustic ◽

Free Ranging

AbstractThe underwater ambient sound field contains quantifiable information about the physical and biological marine environment. The development of operational systems for monitoring in an autonomous way the underwater acoustic signal is necessary for many applications, such as meteorology and biodiversity protection. This paper develops a proof-of-concept study on performing marine soundscape analysis from acoustic passive recordings of free-ranging biologged southern elephant seals (SES). A multivariate multiple linear regression (MMLR) framework is used to predict the measured ambient noise, modeled as a multivariate acoustic response, from SES (depth, speed, and acceleration) and environmental (wind) variables. Results show that the acoustic contributions of SES variables affect mainly low-frequency sound pressure levels (SPLs), while frequency bands above 3 kHz are less corrupted by SES displacement and allow a good measure of the Indian Ocean soundscape. Also, preliminary results toward the development of a mobile embedded weather sensor are presented. In particular, wind speed estimation can be performed from the passive acoustic recordings with an accuracy of 2 m s−1, using a rather simple multiple linear model.

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