Comparison of Synthetic and Experimental Bottom Interactive Waveforms

DiNapoli, F. R.; Potter, D.; Herstein, Peter D.

doi:10.1007/978-1-4684-9051-0_16

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Discontinuities in both density and sound speed occur at layer interfaces. This model has been described in other time waveform simulations [32].…”

Section: A the Geoacoustic Modelmentioning

confidence: 99%

An inverse method for reconstructing the density and sound speed profiles of a layered ocean bottom

Thomson¹

1984

IEEE J. Oceanic Eng.

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A standard inverse problem in underwater acoustics is the reconstruction of the ocean subbottom structure (e.g., the density and sound speed profies) from an aperture-and bandlimited knowledge of the reflection coefficient. In this paper we describe an inverse solution method due to Candel er nl. [12] which is based on the scattering of acoustic plane waves by a one-dimensional inhomogeneous medium. As a consequence of applying the forward scattering approximation to a local wave representation of the acoustic field, they obtain an expression for the reflection coefficient in the form of a nonlinear Fourier transform of the logarithmic derivative of the local admittance. Inversion of this integral transform enables the recovery of the admittance profile via the numerical integration of two firstorder differential equations which require as reflection data a single impulse response of the medium. Separate recovery of both the density and sound speed profiles requires two impulse responses for two different grazing angles. In this case, four differential equations need to be integrated instead of two. To illustrate the capability of the method, we present numerical reconstructions which are based on synthetic reflection data for a geoacoustic model that represents the acoustic properties of the surficial sediments for a site in the Hatteras Abyssal Plain.

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“…Discontinuities in both density and sound speed occur at layer interfaces. This model has been described in other time waveform simulations [32].…”

Section: A the Geoacoustic Modelmentioning

confidence: 99%

An inverse method for reconstructing the density and sound speed profiles of a layered ocean bottom

Thomson¹

1984

IEEE J. Oceanic Eng.

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show abstract

“…Equation (A-i) is of the Ricatti type. From initial conditions (22) and (23), it follows that R(H) = 0.…”

Section: Tr 6925mentioning

confidence: 99%

“…The differential system in equation (30) together with initial conditions in equations (22) and (23) can be converted into an equivalent integral form, e.g., by the variation of parameters method, to obtain…”

mentioning

confidence: 99%

Inversion of the Acoustic Plane Wave Reflection Response of a Layered Ocean Bottom.

Thomson¹,

Chow²

1983

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Ambient Noise Vertical Directionality and Reflection Loss Estimates for a Shallow Tropical Site with a Fast Sound Speed Bottom

2018

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Comparison of Synthetic and Experimental Bottom Interactive Waveforms

Cited by 3 publications

References 4 publications

An inverse method for reconstructing the density and sound speed profiles of a layered ocean bottom

An inverse method for reconstructing the density and sound speed profiles of a layered ocean bottom

Inversion of the Acoustic Plane Wave Reflection Response of a Layered Ocean Bottom.

Ambient Noise Vertical Directionality and Reflection Loss Estimates for a Shallow Tropical Site with a Fast Sound Speed Bottom

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