Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena.
New ultrasonic modeling findings are presented contributing to ten fundamental problems related to low-frequency seismoacoustic wave phenomena resulting from the interaction of underwater acoustic waves with heterogeneous elastic boundaries such as the ice cover and/or ocean bottom. The results are...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1994
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA289644 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289644 |
id |
ftdtic:ADA289644 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA289644 2023-05-15T15:48:47+02:00 Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. Chamuel, Jacques R. SONOQUEST ADVANCED ULTRASONICS RESEARCH WELLESLEY HILLS MA 1994-11 text/html http://www.dtic.mil/docs/citations/ADA289644 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289644 en eng http://www.dtic.mil/docs/citations/ADA289644 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Acoustic Detection and Detectors Acoustics *ACOUSTIC WAVES *UNDERWATER ACOUSTICS BACKSCATTERING BATHYMETRY WAVE PROPAGATION SEISMIC WAVES BOUNDARY LAYER TRANSITION LOW FREQUENCY SONAR TRANSDUCERS OCEAN BOTTOM ULTRASONIC TESTS SEA ICE ACOUSTIC REFLECTION SECONDARY WAVES *SEISMOACOUSTIC WAVES SPN-19950109162 SCHOLTE WAVES SHEAR WAVES CANADA BASIN Text 1994 ftdtic 2016-02-20T05:01:00Z New ultrasonic modeling findings are presented contributing to ten fundamental problems related to low-frequency seismoacoustic wave phenomena resulting from the interaction of underwater acoustic waves with heterogeneous elastic boundaries such as the ice cover and/or ocean bottom. The results are described in ten independent sections covering the following problems: (1) backscattering of Scholte waves and grazing underwater acoustic waves by a trench at a liquid/solid interface, (2) explanation for observed underwater acoustic backscatter from the Canada Basin near 73.2 deg N, 139 deg W where recent bathymetric charts do not reveal the existence of large bathymetric highs nearby, (3) effect of a thin low-velocity layer underneath a floating plate on flexural wave dispersion, (4) effect of viscous waves from suspended particles in a thin layer under sea ice on low-frequency underwater acoustic wave reflectivity, (5) comparison of experimental and theoretical results on the dispersion of antisymmetric edge waves along apex of truncated elastic wedge, (6) wave propagation along apex of free and immersed elastic wedge with range-dependent apex angle and cross section, (7) shear wave coupling to ice cores, (8) ultrasonic characterization of sea ice cores, (9) monostatic seismic profiling using scattering from 45 deg oblique cylindrical hole in ice plate using one compressional transducer, and (10) sea ice finger-rafting and ice thickness. (MM) Text canada basin Sea ice Defense Technical Information Center: DTIC Technical Reports database Canada |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Acoustic Detection and Detectors Acoustics *ACOUSTIC WAVES *UNDERWATER ACOUSTICS BACKSCATTERING BATHYMETRY WAVE PROPAGATION SEISMIC WAVES BOUNDARY LAYER TRANSITION LOW FREQUENCY SONAR TRANSDUCERS OCEAN BOTTOM ULTRASONIC TESTS SEA ICE ACOUSTIC REFLECTION SECONDARY WAVES *SEISMOACOUSTIC WAVES SPN-19950109162 SCHOLTE WAVES SHEAR WAVES CANADA BASIN |
spellingShingle |
Acoustic Detection and Detectors Acoustics *ACOUSTIC WAVES *UNDERWATER ACOUSTICS BACKSCATTERING BATHYMETRY WAVE PROPAGATION SEISMIC WAVES BOUNDARY LAYER TRANSITION LOW FREQUENCY SONAR TRANSDUCERS OCEAN BOTTOM ULTRASONIC TESTS SEA ICE ACOUSTIC REFLECTION SECONDARY WAVES *SEISMOACOUSTIC WAVES SPN-19950109162 SCHOLTE WAVES SHEAR WAVES CANADA BASIN Chamuel, Jacques R. Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
topic_facet |
Acoustic Detection and Detectors Acoustics *ACOUSTIC WAVES *UNDERWATER ACOUSTICS BACKSCATTERING BATHYMETRY WAVE PROPAGATION SEISMIC WAVES BOUNDARY LAYER TRANSITION LOW FREQUENCY SONAR TRANSDUCERS OCEAN BOTTOM ULTRASONIC TESTS SEA ICE ACOUSTIC REFLECTION SECONDARY WAVES *SEISMOACOUSTIC WAVES SPN-19950109162 SCHOLTE WAVES SHEAR WAVES CANADA BASIN |
description |
New ultrasonic modeling findings are presented contributing to ten fundamental problems related to low-frequency seismoacoustic wave phenomena resulting from the interaction of underwater acoustic waves with heterogeneous elastic boundaries such as the ice cover and/or ocean bottom. The results are described in ten independent sections covering the following problems: (1) backscattering of Scholte waves and grazing underwater acoustic waves by a trench at a liquid/solid interface, (2) explanation for observed underwater acoustic backscatter from the Canada Basin near 73.2 deg N, 139 deg W where recent bathymetric charts do not reveal the existence of large bathymetric highs nearby, (3) effect of a thin low-velocity layer underneath a floating plate on flexural wave dispersion, (4) effect of viscous waves from suspended particles in a thin layer under sea ice on low-frequency underwater acoustic wave reflectivity, (5) comparison of experimental and theoretical results on the dispersion of antisymmetric edge waves along apex of truncated elastic wedge, (6) wave propagation along apex of free and immersed elastic wedge with range-dependent apex angle and cross section, (7) shear wave coupling to ice cores, (8) ultrasonic characterization of sea ice cores, (9) monostatic seismic profiling using scattering from 45 deg oblique cylindrical hole in ice plate using one compressional transducer, and (10) sea ice finger-rafting and ice thickness. (MM) |
author2 |
SONOQUEST ADVANCED ULTRASONICS RESEARCH WELLESLEY HILLS MA |
format |
Text |
author |
Chamuel, Jacques R. |
author_facet |
Chamuel, Jacques R. |
author_sort |
Chamuel, Jacques R. |
title |
Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
title_short |
Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
title_full |
Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
title_fullStr |
Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
title_full_unstemmed |
Ultrasonic Studies of Liquid/Solid Seismoacoustic Wave Phenomena. |
title_sort |
ultrasonic studies of liquid/solid seismoacoustic wave phenomena. |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA289644 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289644 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
canada basin Sea ice |
genre_facet |
canada basin Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA289644 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766383909728157696 |