A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.

Sound rays spread horizontally more rapidly upon refraction across a warm eddy than a homogenous water mass. The reverse is true of a cold eddy, causing shadow zones. Focal lengths and position of apparent images are the same using the cylindrical model or the physical thin-lens equation. (Author)

Bibliographic Details
Main Author: Gemmill,William H
Other Authors: NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
Format: Text
Language:English
Published: 1974
Subjects:
Physical and Dynamic Oceanography
Acoustics
*UNDERWATER SOUND
*EDDY CURRENTS
*ACOUSTIC REFRACTION
MATHEMATICAL MODELS
SOUND TRANSMISSION
HORIZONTAL ORIENTATION
RAY TRACING
ACOUSTIC VELOCITY
GULF STREAM
NORTH ATLANTIC OCEAN
THERMAL LENS EFFECT
THERMOPHYSICAL PROPERTIES
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA046564
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA046564
id ftdtic:ADA046564
record_format openpolar
spelling ftdtic:ADA046564 2023-05-15T17:30:32+02:00 A Geometric Model of Horizontal Sound Refraction through a Circular Eddy. Gemmill,William H NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C 1974-01 text/html http://www.dtic.mil/docs/citations/ADA046564 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA046564 en eng http://www.dtic.mil/docs/citations/ADA046564 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography Acoustics *UNDERWATER SOUND *EDDY CURRENTS *ACOUSTIC REFRACTION MATHEMATICAL MODELS SOUND TRANSMISSION HORIZONTAL ORIENTATION RAY TRACING ACOUSTIC VELOCITY GULF STREAM NORTH ATLANTIC OCEAN THERMAL LENS EFFECT THERMOPHYSICAL PROPERTIES Text 1974 ftdtic 2016-02-20T14:37:09Z Sound rays spread horizontally more rapidly upon refraction across a warm eddy than a homogenous water mass. The reverse is true of a cold eddy, causing shadow zones. Focal lengths and position of apparent images are the same using the cylindrical model or the physical thin-lens equation. (Author) Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database
institution Open Polar
collection Defense Technical Information Center: DTIC Technical Reports database
op_collection_id ftdtic
language English
topic Physical and Dynamic Oceanography
Acoustics
*UNDERWATER SOUND
*EDDY CURRENTS
*ACOUSTIC REFRACTION
MATHEMATICAL MODELS
SOUND TRANSMISSION
HORIZONTAL ORIENTATION
RAY TRACING
ACOUSTIC VELOCITY
GULF STREAM
NORTH ATLANTIC OCEAN
THERMAL LENS EFFECT
THERMOPHYSICAL PROPERTIES
spellingShingle Physical and Dynamic Oceanography
Acoustics
*UNDERWATER SOUND
*EDDY CURRENTS
*ACOUSTIC REFRACTION
MATHEMATICAL MODELS
SOUND TRANSMISSION
HORIZONTAL ORIENTATION
RAY TRACING
ACOUSTIC VELOCITY
GULF STREAM
NORTH ATLANTIC OCEAN
THERMAL LENS EFFECT
THERMOPHYSICAL PROPERTIES
Gemmill,William H
A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
topic_facet Physical and Dynamic Oceanography
Acoustics
*UNDERWATER SOUND
*EDDY CURRENTS
*ACOUSTIC REFRACTION
MATHEMATICAL MODELS
SOUND TRANSMISSION
HORIZONTAL ORIENTATION
RAY TRACING
ACOUSTIC VELOCITY
GULF STREAM
NORTH ATLANTIC OCEAN
THERMAL LENS EFFECT
THERMOPHYSICAL PROPERTIES
description Sound rays spread horizontally more rapidly upon refraction across a warm eddy than a homogenous water mass. The reverse is true of a cold eddy, causing shadow zones. Focal lengths and position of apparent images are the same using the cylindrical model or the physical thin-lens equation. (Author)
author2 NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
format Text
author Gemmill,William H
author_facet Gemmill,William H
author_sort Gemmill,William H
title A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
title_short A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
title_full A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
title_fullStr A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
title_full_unstemmed A Geometric Model of Horizontal Sound Refraction through a Circular Eddy.
title_sort geometric model of horizontal sound refraction through a circular eddy.
publishDate 1974
url http://www.dtic.mil/docs/citations/ADA046564
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA046564
genre North Atlantic
genre_facet North Atlantic
op_source DTIC AND NTIS
op_relation http://www.dtic.mil/docs/citations/ADA046564
op_rights APPROVED FOR PUBLIC RELEASE
_version_ 1766127319566516224

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