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Ray Triplications and Caustics: The ...

Defilippis, Jacob Paul,

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Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound // Jacob Paul Defilippis.
Author:	Defilippis, Jacob Paul,
Description:	1 electronic resource (110 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
Contained By:	Dissertations Abstracts International86-04B.
Subject:	Acoustics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31147893
ISBN:	9798384481621

Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound /
Defilippis, Jacob Paul,

Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound /Jacob Paul Defilippis. - 1 electronic resource (110 pages)

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

The work included in this dissertation addresses the complexities of underwater sound propagation through fine-scale, 1-10 m, sound speed structures in the upper ocean. These small spatial variations in the ocean's sound speed strongly affect sound waves at mid-frequencies (1-10 kHz) because the wavelengths of those sound waves (1.5-0.15) m approach the scale of these sound speed structures. Chapters 1 & 2 cover observations from a field experiment off the coast of San Diego that are used to analyze sound propagation through the measured sound speed profiles that contained fine structures. Chapter 3 covers oceanographic observations from the same experiment and a model of sound speed fluctuations driven by internal wave motion to analyze how fine-scale structures alter the power spectrum of oceanographic sound speed fluctuations. A synthesis of oceanographic and acoustic observations with models suggests that fine-scale structures create additional acoustic propagation paths, caustics, and change the temporal spectrum of sound speed variability. The culmination of these effects explains why acoustic receptions at mid-frequencies propagating in the upper ocean are generally more variable than at lower frequencies in deeper parts of the ocean.

English

ISBN: 9798384481621Subjects--Topical Terms:

879105
Acoustics.
Subjects--Index Terms:

Wavelengths

Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound /
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245 1 0 $a Ray Triplications and Caustics: The Imprint of Ocean Fine Structure on Underwater Sound / $c Jacob Paul Defilippis.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 1 electronic resource (110 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
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500 $a Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
500 $a Advisors: Lucas, Andrew J.; Cornuelle, Bruce Committee members: Coles, William; Colosi, John; Meyer, Florian; Young, William.
502 $b Ph.D. $c University of California, San Diego $d 2024.
520 $a The work included in this dissertation addresses the complexities of underwater sound propagation through fine-scale, 1-10 m, sound speed structures in the upper ocean. These small spatial variations in the ocean's sound speed strongly affect sound waves at mid-frequencies (1-10 kHz) because the wavelengths of those sound waves (1.5-0.15) m approach the scale of these sound speed structures. Chapters 1 & 2 cover observations from a field experiment off the coast of San Diego that are used to analyze sound propagation through the measured sound speed profiles that contained fine structures. Chapter 3 covers oceanographic observations from the same experiment and a model of sound speed fluctuations driven by internal wave motion to analyze how fine-scale structures alter the power spectrum of oceanographic sound speed fluctuations. A synthesis of oceanographic and acoustic observations with models suggests that fine-scale structures create additional acoustic propagation paths, caustics, and change the temporal spectrum of sound speed variability. The culmination of these effects explains why acoustic receptions at mid-frequencies propagating in the upper ocean are generally more variable than at lower frequencies in deeper parts of the ocean.
546 $a English
590 $a School code: 0033
650 4 $a Acoustics. $3 879105
650 4 $a Ocean engineering. $3 660731
650 4 $a Physical oceanography. $3 3168433
653 $a Wavelengths
653 $a Sound waves
653 $a Oceanographic sound
653 $a Internal wave motion
690 $a 0986
690 $a 0415
690 $a 0547
710 2 $a University of California, San Diego. $b Physics. $e degree granting institution. $3 3816268
720 1 $a Lucas, Andrew J. $e degree supervisor.
720 1 $a Cornuelle, Bruce $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-04B.
790 $a 0033
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31147893