scholarly journals Shallow water acoustics on the Canadian East Coast Continental Shelf

1988 ◽  
Vol 84 (S1) ◽  
pp. S150-S150
Author(s):  
Philip R. Staal ◽  
Steven J. Hughes ◽  
Dale D. Ellis ◽  
David M. F. Chapman
Keyword(s):  
Continental Shelf ◽  
Shallow Water ◽  
East Coast ◽  
Shallow Water Acoustics

Hawaii Experimental Acoustics Range for Shallow Water Applications

2011 ◽  
Vol 45 (3) ◽  
pp. 69-76 ◽  
Author(s):  
Tom Fedenczuk ◽  
Eva-Marie Nosal
Keyword(s):  
Shallow Water ◽  
Water Environment ◽  
Shallow Water Acoustics ◽  
Central Node ◽  
Long Baseline ◽  
Wide Range ◽  
Shallow Water Environment ◽  
Near Shore ◽  
Monitoring And Surveillance ◽  
Passive Acoustic

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.

The Recent Cypraeidae of Northern New Zealand from the Kermadec Islands to the Poor Knights Islands, Southwest Pacific Ocean (Mollusca: Gastropoda: Cypraeidae)

The Festivus ◽  
2018 ◽  
Vol 50 (1) ◽  
pp. 36-54
Author(s):  
John Daughenbaugh
Keyword(s):  
New Zealand ◽  
Pacific Ocean ◽  
Continental Shelf ◽  
East Coast ◽  
Species Distributions ◽  
East Side ◽  
Tropical Eastern Pacific ◽  
The North ◽  
The Poor ◽  
Coastal Shelf

For researchers, isolated regions at the periphery of species’ distributions hold a peculiar fascination. The causes of their remoteness vary based on: distance (e.g. the Tropical Eastern Pacific), distance and countervailing currents (e.g. the Marquesas), location in a present day gyre (e.g. the Pitcairn Group) or the absence of present day means of veliger transport (e.g. the Vema Seamount). (Daughenbaugh & Beals 2013; Daughenbaugh 2015a & b, 2017). The northern New Zealand Region from the Kermadec Islands (Kermadecs) to the coastal and shelf areas in the northernmost part of New Zealand’s North Island (Northland), including the Poor Knights Islands (PKI), constitute the distributional boundaries for a number of Cypraeidae species. The boundaries are the result of the absence of coastal shelves along the east side of the Kermadec Ridge (Ridge) and precipitous drops to abyssal depths along Northland’s east coast continental shelf. Tropical waters, with their potential to transport Cypraeidae larvae, flow eastward from southern Queensland, Australia, entrained in the Tasman Front which terminates when reaching North Cape, the northernmost tip of Northland. There, the North Cape Eddy captures most of this flow while the remainder, the East Auckland Current (EAUC), flows intermittently southward along the eastern coastal, shelf and offshore areas of Northland into waters incapable of supporting Cypraeidae populations.

Modal Perturbation Theory in the Case of Bathymetry Variations in Shallow-Water Acoustics

2021 ◽  
Vol 28 (2) ◽  
pp. 257-262
Author(s):  
P. S. Petrov ◽  
M. Yu. Trofimov ◽  
A. D. Zakharenko
Keyword(s):  
Perturbation Theory ◽  
Shallow Water ◽  
Shallow Water Acoustics

A ray mode parabolic equation, and examples of its application in shallow water acoustics propagation problems

2015 ◽  
Author(s):  
Mikhail Yu. Trofimov ◽  
Sergey B. Kozitskiy ◽  
Alena D. Zakharenko ◽  
Pavel S. Petrov
Keyword(s):  
Parabolic Equation ◽  
Shallow Water ◽  
Shallow Water Acoustics

Distribution of Tailor (Pomatomus saltatrix) Larvae along the Coast of New South Wales, Australia

1996 ◽  
Vol 47 (2) ◽  
pp. 331 ◽  
Author(s):  
AG Miskiewicz ◽  
BD Bruce ◽  
P Dixon
Keyword(s):  
Continental Shelf ◽  
Coastal Waters ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
Eastern Coast ◽  
Pomatomus Saltatrix ◽  
Outer Continental Shelf ◽  
Survey Period ◽  
South Wales

The distribution of tailor (Pomatomus saltatrix) larvae is described on the basis of the results of four plankton surveys undertaken in northern and central New South Wales (NSW) coastal waters. These comprised a single survey during May 1989 along the northern NSW coast and multiple surveys in January, March and May 1983 between Sydney and Brisbane. Pomatomus saltatrix larvae occurred throughout the survey period, with the highest abundances on the northern NSW coast. Most larvae were caught in mid and outer continental shelf waters at water temperatures of ≥22�C. The only known spawning locality for P. saltatrix is in the vicinity of Fraser Island in southern Queensland from August to October. The occurrence of larvae along the NSW coast from January to May indicates that the spawning season of P. saltatrix is more extensive than previously reported and that spawning occurs along the east coast of Australia in localities other than Fraser Island. Further surveys of larvae in southern Queensland and northern NSW waters, especially from August to December, are required to determine if P. saltatrix has one extended or two discrete spawning seasons along the eastern coast of Australia.

Tank experiments and model comparisons of shallow water acoustics over an elastic bottom

2005 ◽  
Vol 117 (4) ◽  
pp. 2576-2576
Author(s):  
Jon M. Collis ◽  
William L. Siegmann ◽  
Michael D. Collins ◽  
Erik C. Porse ◽  
Harry J. Simpson ◽  
...  
Keyword(s):  
Shallow Water ◽  
Shallow Water Acoustics ◽  
Model Comparisons ◽  
Elastic Bottom

Wavefront modeling in shallow water acoustics

2002 ◽  
Vol 112 (5) ◽  
pp. 2205-2206
Author(s):  
Chris T. Tindle
Keyword(s):  
Shallow Water ◽  
Shallow Water Acoustics
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