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A Study of Waveguide Invariant Using...

Muniz, Alexander P.

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A Study of Waveguide Invariant Using Multiple Parameters.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Study of Waveguide Invariant Using Multiple Parameters./
作者:	Muniz, Alexander P.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	80 p.
附註:	Source: Masters Abstracts International, Volume: 82-04.
Contained By:	Masters Abstracts International82-04.
標題:	Acoustics. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27741253
ISBN:	9798678118202

A Study of Waveguide Invariant Using Multiple Parameters.
Muniz, Alexander P.

A Study of Waveguide Invariant Using Multiple Parameters. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 80 p.

Source: Masters Abstracts International, Volume: 82-04.

Thesis (M.S.)--University of Delaware, 2020.

This item must not be sold to any third party vendors.

When a surface ship of opportunity passes a single hydrophone, a distinct pattern known as the "bathtub" feature can be identified on the spectrogram of the received signal. If the ship speed and distance to the recorder are known, then useful information about the physical properties of the waveguide can be extracted using the waveguide invariant parameter (β) describing the characteristics of the ocean acoustic waveguide. For a simple waveguide, β can be approximated as one for all frequencies and ranges and is invariant to mode pairs.This research, through the use of the normal mode model KRAKEN, and with acoustic data gathered during the Shallow Water Canada Basin Acoustic Propagation Experiment, illustrates that β in a complex Arctic environment does in fact change with the properties of the waveguide such as water depth, sound speed profile in the water, sediment layer structure, and the seafloor physical properties. The value of waveguide invariant also changes with the frequency and mode pair selected.

ISBN: 9798678118202Subjects--Topical Terms:

879105
Acoustics.
Subjects--Index Terms:

Arctic environment

A Study of Waveguide Invariant Using Multiple Parameters.
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300 $a 80 p.
500 $a Source: Masters Abstracts International, Volume: 82-04.
500 $a Advisor: Badiey, Mohsen;Wan, Lin.
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506 $a This item must not be sold to any third party vendors.
520 $a When a surface ship of opportunity passes a single hydrophone, a distinct pattern known as the "bathtub" feature can be identified on the spectrogram of the received signal. If the ship speed and distance to the recorder are known, then useful information about the physical properties of the waveguide can be extracted using the waveguide invariant parameter (β) describing the characteristics of the ocean acoustic waveguide. For a simple waveguide, β can be approximated as one for all frequencies and ranges and is invariant to mode pairs.This research, through the use of the normal mode model KRAKEN, and with acoustic data gathered during the Shallow Water Canada Basin Acoustic Propagation Experiment, illustrates that β in a complex Arctic environment does in fact change with the properties of the waveguide such as water depth, sound speed profile in the water, sediment layer structure, and the seafloor physical properties. The value of waveguide invariant also changes with the frequency and mode pair selected.
590 $a School code: 0060.
650 4 $a Acoustics. $3 879105
650 4 $a Hydrologic sciences. $3 3168407
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653 $a Waveguide Invariant
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