Search Results - "Holland, Charles W"

Hamilton's geoacoustic model by Holland, Charles W., Dosso, Stan E.

“…The Reflections series takes a look back on historical articles from The Journal of the Acoustical Society of America that have had a significant impact on the…”
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Trans-dimensional geoacoustic inversion by Dettmer, Jan, Dosso, Stan E., Holland, Charles W.

“…This paper develops a general trans-dimensional Bayesian methodology for geoacoustic inversion. Trans-dimensional inverse problems are a generalization of…”
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Meso-scale seabed quantification with geoacoustic inversion by Sonnemann, Tim, Dettmer, Jan, Holland, Charles W., Dosso, Stan E.

“…Knowledge of sub-seabed geoacoustic properties, for example depth dependent sound speed and porosity, is of importance for a variety of applications. Here, we…”
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Uncertainty estimation in seismo-acoustic reflection travel time inversion by Dettmer, Jan, Dosso, Stan E., Holland, Charles W.

“…This paper develops a nonlinear Bayesian inversion for high-resolution seabed reflection travel time data including rigorous uncertainty estimation and…”
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Erratum: Sediment interval velocities from a monostatic multibeam sonar [J. Acoust. Soc. Am. 147, EL13−EL18 (2020)] by Holland, Charles W., Pinson, Samuel

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Geoacoustic Uncertainties From Viscoelastic Inversion of Seabed Reflection Data by Dosso, S.E., Holland, C.W.

“…This paper applies nonlinear Bayesian inversion to seabed reflection data to estimate viscoelastic parameters of the upper sediments. The inversion provides…”
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Seabed Observations at the New England Mud Patch: Reflection and Scattering Measurements and Direct Geoacoustic Information by Holland, Charles W., Smith, Chad M., Lowe, Zackary, Dorminy, Jim

“…Seabed reflection and scattering measurements were conducted at the New England Mud Patch to better understand the acoustic properties of fine-grained (muddy)…”
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Sediment interval velocities from a monostatic multibeam sonar by Holland, Charles W., Pinson, Samuel

“…Interval velocities for marine sediments are generally obtained from source-receiver separations at various offsets. A method is described for estimating…”
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On compressional wave attenuation in muddy marine sediments by Holland, Charles W., Dosso, Stan E.

“…A method for measuring in situ compressional wave attenuation exploiting the spectral decay of reflection coefficient Bragg resonances is applied to…”
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Depth-Dependent Geoacoustic Inferences With Dispersion at the New England Mud Patch via Reflection Coefficient Inversion by Belcourt, Josee, Holland, Charles W., Dosso, Stan E., Dettmer, Jan, Goff, John A.

“…Depth-dependent geoacoustic properties are inferred from wide-angle frequency-domain reflection-coefficient data at two sites with different mud-layer…”
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Depth and frequency dependence of geoacoustic properties on the New England Mud Patch from reflection coefficient inversiona by Jiang, Yong-Min, Holland, Charles W., Dosso, Stan E., Dettmer, Jan

“…Muddy sediments cover significant portions of continental shelves, but their physical properties remain poorly understood compared to sandy sediments. This…”
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Parallel tempering for strongly nonlinear geoacoustic inversion by Dosso, Stan E, Holland, Charles W, Sambridge, Malcolm

“…This paper applies parallel tempering within a Bayesian formulation for strongly nonlinear geoacoustic inverse problems. Bayesian geoacoustic inversion…”
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Sound speed gradients in mud by Holland, Charles W.

“…Various methods have been used to estimate sound speed profiles in mud at the New England Mud Patch. Some of these methods show large sound speed gradients of…”
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Fast computation of time-domain scattering by an inhomogeneous stratified seafloor by Olson, Derek R., Holland, Charles W.

“…Marine sediment properties exhibit fluctuations on a very wide range of scales in all three spatial dimensions. These fluctuations lead to scattering of…”
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Relative velocity measurement from the spectral phase of a match-filtered linear frequency modulated pulse by Pinson, Samuel, Holland, Charles W.

“…Linear frequency modulated signals are commonly used to perform underwater acoustic measurements since they can achieve high signal-to-noise ratios with…”
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Seafloor sound-speed profile characterization with non-parallel layering by the image source method: Application to CLUTTER'09 campaign data by Pinson, Samuel, Holland, Charles W.

“…The image source method was originally developed to estimate sediment sound speed as a function of depth assuming plane-layered sediments. Recently, the…”
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Linearized Bayesian Inversion for Experiment Geometry at the New England Mud Patch by Belcourt, Josee, Dosso, Stan E., Holland, Charles W., Dettmer, Jan

“…This paper presents a linearized Bayesian approach to invert acoustic arrival-time data for high-precision estimation of experiment geometry and uncertainties…”
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Roughness influence on multibeam-subbottom-profiler specular echoes and roughness parameter inversion by Pinson, Samuel, Holland, Charles W., Stéphan, Yann

“…Integral solutions for wave scattering over slightly rough surfaces generally include the source and receiver directivity. In this paper, it is shown that…”
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Trans-dimensional joint inversion of seabed scattering and reflection data by Steininger, Gavin, Dettmer, Jan, Dosso, Stan E, Holland, Charles W

“…This paper examines joint inversion of acoustic scattering and reflection data to resolve seabed interface roughness parameters (spectral strength, exponent,…”
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In situ sediment dispersion estimates in the presence of discrete layers and gradients by Holland, Charles W, Dettmer, Jan

“…One of the difficulties in validating sediment models has been the lack of reliable low frequency dispersion measurements. A reflection method is presented…”
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