The acoustic environment of ring BOB

Andrew C. Vastano, Donald Olson, John A. Vastano

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The sound-speed distribution in ring BOB present during cruise 011 of R/V Endeavor (July-August 1977) has been examined on the basis of CTD and XBT observations. Sound-speed values for the XBTs have been computed utilizing a regression analysis for salinity on the hydrographic data and Wilson's sound-speed formula. In addition to the characteristic low sound-speed lens associated with the ring core, the resolution obtained with the XBT observations has revealed a near-surface high sound-speed halo, surrounding the core, in the region of the encircling Gulf Stream remnant. The halo is present between the depths of 50 to 150m and represents a deviation of approximately 20 m/s relative to ring center at 100 m. The azimuthal deviations of sound speed from circular symmetry are presented in terms of observations taken on cruise 008 of R/V Endeavor(May 1977). These perturbations are related to quasi-geostrophic wave structures within the ring which may be stationary or rotate around the ring. The high sound-speed halo, low speed lens, shape perturbations, and translation generate a complex acoustic environment within cyclonic rings.

Original languageEnglish (US)
Pages (from-to)1728-1735
Number of pages8
JournalJournal of the Acoustical Society of America
Volume70
Issue number6
DOIs
StatePublished - Jan 1 1981
Externally publishedYes

Fingerprint

acoustics
rings
halos
lenses
charge transfer devices
Gulf Stream
deviation
perturbation
Ring
Acoustics
salinity
Sound
low speed
regression analysis
symmetry
Halo
Deviation

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

The acoustic environment of ring BOB. / Vastano, Andrew C.; Olson, Donald; Vastano, John A.

In: Journal of the Acoustical Society of America, Vol. 70, No. 6, 01.01.1981, p. 1728-1735.

Research output: Contribution to journalArticle

Vastano, Andrew C. ; Olson, Donald ; Vastano, John A. / The acoustic environment of ring BOB. In: Journal of the Acoustical Society of America. 1981 ; Vol. 70, No. 6. pp. 1728-1735.
@article{9dae1c1edefa4c0fa1a54220ab3d78d3,
title = "The acoustic environment of ring BOB",
abstract = "The sound-speed distribution in ring BOB present during cruise 011 of R/V Endeavor (July-August 1977) has been examined on the basis of CTD and XBT observations. Sound-speed values for the XBTs have been computed utilizing a regression analysis for salinity on the hydrographic data and Wilson's sound-speed formula. In addition to the characteristic low sound-speed lens associated with the ring core, the resolution obtained with the XBT observations has revealed a near-surface high sound-speed halo, surrounding the core, in the region of the encircling Gulf Stream remnant. The halo is present between the depths of 50 to 150m and represents a deviation of approximately 20 m/s relative to ring center at 100 m. The azimuthal deviations of sound speed from circular symmetry are presented in terms of observations taken on cruise 008 of R/V Endeavor(May 1977). These perturbations are related to quasi-geostrophic wave structures within the ring which may be stationary or rotate around the ring. The high sound-speed halo, low speed lens, shape perturbations, and translation generate a complex acoustic environment within cyclonic rings.",
author = "Vastano, {Andrew C.} and Donald Olson and Vastano, {John A.}",
year = "1981",
month = "1",
day = "1",
doi = "10.1121/1.387241",
language = "English (US)",
volume = "70",
pages = "1728--1735",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "6",

}

TY - JOUR

T1 - The acoustic environment of ring BOB

AU - Vastano, Andrew C.

AU - Olson, Donald

AU - Vastano, John A.

PY - 1981/1/1

Y1 - 1981/1/1

N2 - The sound-speed distribution in ring BOB present during cruise 011 of R/V Endeavor (July-August 1977) has been examined on the basis of CTD and XBT observations. Sound-speed values for the XBTs have been computed utilizing a regression analysis for salinity on the hydrographic data and Wilson's sound-speed formula. In addition to the characteristic low sound-speed lens associated with the ring core, the resolution obtained with the XBT observations has revealed a near-surface high sound-speed halo, surrounding the core, in the region of the encircling Gulf Stream remnant. The halo is present between the depths of 50 to 150m and represents a deviation of approximately 20 m/s relative to ring center at 100 m. The azimuthal deviations of sound speed from circular symmetry are presented in terms of observations taken on cruise 008 of R/V Endeavor(May 1977). These perturbations are related to quasi-geostrophic wave structures within the ring which may be stationary or rotate around the ring. The high sound-speed halo, low speed lens, shape perturbations, and translation generate a complex acoustic environment within cyclonic rings.

AB - The sound-speed distribution in ring BOB present during cruise 011 of R/V Endeavor (July-August 1977) has been examined on the basis of CTD and XBT observations. Sound-speed values for the XBTs have been computed utilizing a regression analysis for salinity on the hydrographic data and Wilson's sound-speed formula. In addition to the characteristic low sound-speed lens associated with the ring core, the resolution obtained with the XBT observations has revealed a near-surface high sound-speed halo, surrounding the core, in the region of the encircling Gulf Stream remnant. The halo is present between the depths of 50 to 150m and represents a deviation of approximately 20 m/s relative to ring center at 100 m. The azimuthal deviations of sound speed from circular symmetry are presented in terms of observations taken on cruise 008 of R/V Endeavor(May 1977). These perturbations are related to quasi-geostrophic wave structures within the ring which may be stationary or rotate around the ring. The high sound-speed halo, low speed lens, shape perturbations, and translation generate a complex acoustic environment within cyclonic rings.

UR - http://www.scopus.com/inward/record.url?scp=0019668428&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019668428&partnerID=8YFLogxK

U2 - 10.1121/1.387241

DO - 10.1121/1.387241

M3 - Article

VL - 70

SP - 1728

EP - 1735

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 6

ER -