Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges
Behavior of monostatic backscatter from Arctic open leads and pressure ridges was studied using scale models in the laboratory under controlled conditions. Experiments were performed in an anechoic tank using pulsed transmissions from underwater point sources to measure the backscatter from several...
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Monterey, California: U.S. Naval Postgraduate School
1987
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ftnavalpschool:oai:calhoun.nps.edu:10945/22564 2024-06-09T07:43:27+00:00 Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges Browne, Michael Joseph Medwin, Herman Naval Postgraduate School Engineering Acoustics Bourke, Robert H. 1987-06 159 p. 28 cm. application/pdf https://hdl.handle.net/10945/22564 en_US eng Monterey, California: U.S. Naval Postgraduate School https://hdl.handle.net/10945/22564 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Underwater Acoustics Arctic Ice Backscatter Mode Conversion Diffraction Thesis 1987 ftnavalpschool 2024-05-15T00:19:57Z Behavior of monostatic backscatter from Arctic open leads and pressure ridges was studied using scale models in the laboratory under controlled conditions. Experiments were performed in an anechoic tank using pulsed transmissions from underwater point sources to measure the backscatter from several different floating acrylic plate by the selection of the acrylic material, and the geometrical properties of the ice in features were accurately scaled by maintaining the appropriate dimension-to-wavelength ratios. The characteristic behavior of the backscatter was explained using both diffraction theory and mode-conversion concepts. It was generally observed that a significant amount of the incident acoustic energy resulted in solidborne vibrations and propagating waves within the floating plate. The ability of those vibrations to reradiate energy into the water resulted in greater backscatter than predicted from the trailing edge of an open lead and piston-like radiation from pressure rigid models Approved for public release; distribution is unlimited. Lieutenant, United States Navy http://archive.org/details/underwatercousti1094522564 Thesis Arctic Naval Postgraduate School: Calhoun Arctic |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
English |
topic |
Underwater Acoustics Arctic Ice Backscatter Mode Conversion Diffraction |
spellingShingle |
Underwater Acoustics Arctic Ice Backscatter Mode Conversion Diffraction Browne, Michael Joseph Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
topic_facet |
Underwater Acoustics Arctic Ice Backscatter Mode Conversion Diffraction |
description |
Behavior of monostatic backscatter from Arctic open leads and pressure ridges was studied using scale models in the laboratory under controlled conditions. Experiments were performed in an anechoic tank using pulsed transmissions from underwater point sources to measure the backscatter from several different floating acrylic plate by the selection of the acrylic material, and the geometrical properties of the ice in features were accurately scaled by maintaining the appropriate dimension-to-wavelength ratios. The characteristic behavior of the backscatter was explained using both diffraction theory and mode-conversion concepts. It was generally observed that a significant amount of the incident acoustic energy resulted in solidborne vibrations and propagating waves within the floating plate. The ability of those vibrations to reradiate energy into the water resulted in greater backscatter than predicted from the trailing edge of an open lead and piston-like radiation from pressure rigid models Approved for public release; distribution is unlimited. Lieutenant, United States Navy http://archive.org/details/underwatercousti1094522564 |
author2 |
Medwin, Herman Naval Postgraduate School Engineering Acoustics Bourke, Robert H. |
format |
Thesis |
author |
Browne, Michael Joseph |
author_facet |
Browne, Michael Joseph |
author_sort |
Browne, Michael Joseph |
title |
Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
title_short |
Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
title_full |
Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
title_fullStr |
Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
title_full_unstemmed |
Underwater acoustic backscatter from a model of Arctic ice open leads and pressure ridges |
title_sort |
underwater acoustic backscatter from a model of arctic ice open leads and pressure ridges |
publisher |
Monterey, California: U.S. Naval Postgraduate School |
publishDate |
1987 |
url |
https://hdl.handle.net/10945/22564 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
https://hdl.handle.net/10945/22564 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801372262951026688 |