Numerical modeling of acoustic tomography in the Straits of Florida

Sensitivity to bathymetry

Lan Nghiem-Phu, Harry A Deferrari

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An acoustic model based on the split-step parabolic equation technique is used to study the effects of irregularities in bathymetry on the transmission loss or equivalently, sound energy distribution for continuous wave (cw) acoustic signals. In particular, contours of transmission loss in the range-depth plane are predicted for the propagation of a 510-Hz cw signal across the Straits of Florida between Miami, Florida and Bimini, Bahamas. The predicted intensity contours exhibit recognizable energy bundles that correspond to actual ray bundles. The stability of these bundles is studied as random bottom irregularities are introduced. The distribution of acoustic energy is found to be insensitive to random variations in bottom bathymetry of up to 5 m rms. The same model is used to investigate the feasibility of transport and depth-averaged temperature measurements of the Florida current by acoustic method. Energy contour plots are predicted for several source-receiver geometries. A system of five transceivers positioned to form two triangles sharing a common vertex in the eastern edge of the Miami terrace is evaluated as a monitoring strategy.

Original languageEnglish (US)
Pages (from-to)1385-1398
Number of pages14
JournalJournal of the Acoustical Society of America
Volume81
Issue number5
DOIs
StatePublished - 1987

Fingerprint

straits
bathymeters
tomography
acoustics
sensitivity
bundles
transmission loss
irregularities
continuous radiation
Bahamas
transmitter receivers
triangles
temperature measurement
energy
rays
energy distribution
apexes
receivers
plots
Energy

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)

Cite this

Numerical modeling of acoustic tomography in the Straits of Florida : Sensitivity to bathymetry. / Nghiem-Phu, Lan; Deferrari, Harry A.

In: Journal of the Acoustical Society of America, Vol. 81, No. 5, 1987, p. 1385-1398.

Research output: Contribution to journalArticle

@article{866908348b31414e90f06c6c2f78eb5c,
title = "Numerical modeling of acoustic tomography in the Straits of Florida: Sensitivity to bathymetry",
abstract = "An acoustic model based on the split-step parabolic equation technique is used to study the effects of irregularities in bathymetry on the transmission loss or equivalently, sound energy distribution for continuous wave (cw) acoustic signals. In particular, contours of transmission loss in the range-depth plane are predicted for the propagation of a 510-Hz cw signal across the Straits of Florida between Miami, Florida and Bimini, Bahamas. The predicted intensity contours exhibit recognizable energy bundles that correspond to actual ray bundles. The stability of these bundles is studied as random bottom irregularities are introduced. The distribution of acoustic energy is found to be insensitive to random variations in bottom bathymetry of up to 5 m rms. The same model is used to investigate the feasibility of transport and depth-averaged temperature measurements of the Florida current by acoustic method. Energy contour plots are predicted for several source-receiver geometries. A system of five transceivers positioned to form two triangles sharing a common vertex in the eastern edge of the Miami terrace is evaluated as a monitoring strategy.",
author = "Lan Nghiem-Phu and Deferrari, {Harry A}",
year = "1987",
doi = "10.1121/1.394544",
language = "English (US)",
volume = "81",
pages = "1385--1398",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "5",

}

TY - JOUR

T1 - Numerical modeling of acoustic tomography in the Straits of Florida

T2 - Sensitivity to bathymetry

AU - Nghiem-Phu, Lan

AU - Deferrari, Harry A

PY - 1987

Y1 - 1987

N2 - An acoustic model based on the split-step parabolic equation technique is used to study the effects of irregularities in bathymetry on the transmission loss or equivalently, sound energy distribution for continuous wave (cw) acoustic signals. In particular, contours of transmission loss in the range-depth plane are predicted for the propagation of a 510-Hz cw signal across the Straits of Florida between Miami, Florida and Bimini, Bahamas. The predicted intensity contours exhibit recognizable energy bundles that correspond to actual ray bundles. The stability of these bundles is studied as random bottom irregularities are introduced. The distribution of acoustic energy is found to be insensitive to random variations in bottom bathymetry of up to 5 m rms. The same model is used to investigate the feasibility of transport and depth-averaged temperature measurements of the Florida current by acoustic method. Energy contour plots are predicted for several source-receiver geometries. A system of five transceivers positioned to form two triangles sharing a common vertex in the eastern edge of the Miami terrace is evaluated as a monitoring strategy.

AB - An acoustic model based on the split-step parabolic equation technique is used to study the effects of irregularities in bathymetry on the transmission loss or equivalently, sound energy distribution for continuous wave (cw) acoustic signals. In particular, contours of transmission loss in the range-depth plane are predicted for the propagation of a 510-Hz cw signal across the Straits of Florida between Miami, Florida and Bimini, Bahamas. The predicted intensity contours exhibit recognizable energy bundles that correspond to actual ray bundles. The stability of these bundles is studied as random bottom irregularities are introduced. The distribution of acoustic energy is found to be insensitive to random variations in bottom bathymetry of up to 5 m rms. The same model is used to investigate the feasibility of transport and depth-averaged temperature measurements of the Florida current by acoustic method. Energy contour plots are predicted for several source-receiver geometries. A system of five transceivers positioned to form two triangles sharing a common vertex in the eastern edge of the Miami terrace is evaluated as a monitoring strategy.

UR - http://www.scopus.com/inward/record.url?scp=0008240304&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0008240304&partnerID=8YFLogxK

U2 - 10.1121/1.394544

DO - 10.1121/1.394544

M3 - Article

VL - 81

SP - 1385

EP - 1398

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 5

ER -