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Geoacoustic Inversion of Broadband Data from the Florida Straits
2004
AIP Conference Proceedings
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This paper presents results of matched field inversions of the acoustic field data to estimate geoacoustic model parameters for the experimental site. ...
The sound source was cycled in octaves from 100 Hz to 3200 Hz, transmitting each octave for one hour. ...
The sound propagation is bottom limited in the shallow water environment, but there is relatively sparse information about the geoacoustic parameters. ...
doi:10.1063/1.1842995
fatcat:5xyk2ack5vbijnhaleqtugzu2i
On the use of acoustic particle velocity fields in adjoint‐based inversion
2006
Journal of the Acoustical Society of America
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Calculations are performed on synthetic broadband data for a shallow water environment ͑South Elba͒ with an optimization scheme based on different metaheuristics. ...
In the inversion, complex density model based on Biot model is used to invert for parameters including porosity and permeability. Inversion results are compared with existing geological survey data. ...
The approach is based on the method of fast Gibbs sampling ͑FGS͒ of the posterior probability density to estimate uncertainties in both geoacoustic and scattering parameters for broadband acoustic data ...
doi:10.1121/1.4781455
fatcat:qpg6fie5yfgvlirte327wd3ecy
Characterization of sediment dynamics in an estuary environment using acoustic techniques
2006
Journal of the Acoustical Society of America
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Calculations are performed on synthetic broadband data for a shallow water environment ͑South Elba͒ with an optimization scheme based on different metaheuristics. ...
In the inversion, complex density model based on Biot model is used to invert for parameters including porosity and permeability. Inversion results are compared with existing geological survey data. ...
The approach is based on the method of fast Gibbs sampling ͑FGS͒ of the posterior probability density to estimate uncertainties in both geoacoustic and scattering parameters for broadband acoustic data ...
doi:10.1121/1.4781460
fatcat:f74pqlj7wjdfrkz56jvstidp5u
Bayesian Inversion for Geoacoustic Parameters in Shallow Sea
2020
Sensors
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This paper investigates the geoacoustic parameters in a shallow sea environment using a single-receiver geoacoustic inversion method based on Bayesian theory. ...
Geoacoustic parameter inversion is a crucial issue in underwater acoustic research for shallow sea environments and has increasingly become popular in the recent past. ...
Acknowledgments: We acknowledge the National Key Laboratory, College of Underwater Acoustic Engineering, Harbin Engineering University, China for supporting in this research. ...
doi:10.3390/s20072150
pmid:32290200
fatcat:zuucxqhymzhdzjd5suadon2cxe
Time-domain geoacoustic inversion of high-frequency chirp signal from a simple towed system
2003
IEEE Journal of Oceanic Engineering
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High-frequency chirp signals that have been emitted from the source are received after multiple penetrations and reflections from the shallow water sub-bottom structure and are processed for geoacoustical ...
An inversion method using a towed system consisting of a source and two receivers is presented. ...
INTRODUCTION R ESEARCH activities on geoacoustic inversions have grown due to the significance of the bottom interaction for shallow-water sound propagation in the ocean. ...
doi:10.1109/joe.2003.816684
fatcat:5nutyzfug5fnrclt5mmur3leh4
Geoacoustic Inversion for Bottom Parameters in the Deep-Water Area of the South China Sea
2015
Chinese Physics Letters
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Bottom acoustic parameters play an important role in sound field prediction. Acoustic parameters in deep water are not well understood. ...
We propose a multiple-step TL inversion method to invert sound speed, density and attenuation in deep water. ...
Many inversion methods for shallow water have been developed in recent years, such as match-field processing (MFP) inversion, [1, 2] methods based on the mode dispersion, [3, 4] methods based on the ...
doi:10.1088/0256-307x/32/12/124301
fatcat:yiyyyfbjrze4rinlltv6jvbhc4
Geoacoustic inversion based on both acoustic pressure and particle velocity
2006
Journal of the Acoustical Society of America
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Calculations are performed on synthetic broadband data for a shallow water environment ͑South Elba͒ with an optimization scheme based on different metaheuristics. ...
The approach is based on the method of fast Gibbs sampling ͑FGS͒ of the posterior probability density to estimate uncertainties in both geoacoustic and scattering parameters for broadband acoustic data ...
doi:10.1121/1.4781450
fatcat:x7yaj4hohjaupokwep32kxanwy
Short range travel time geoacoustic inversion with vertical line array
2008
Journal of the Acoustical Society of America
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This paper presents travel time geoacoustic inversion of broadband data collected on a vertical line array at short range of 230 m during the Shallow Water 2006 experiments. ...
The ocean sound speed profile and geometric parameters were inverted prior to the sea bottom properties to account for the temporally variable ocean environment. ...
Hodgkiss, for the acoustic data, Dr. David Knobles for the navigation data, and Dr. John Goff for the chirp seismic reflection data. ...
doi:10.1121/1.2963093
pmid:19045555
fatcat:5lurw7zbqjdxnbw45uwbdsmrbq
Geoacoustic inversion in time domain using ship of opportunity noise recorded on a horizontal towed array
2005
Journal of the Acoustical Society of America
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This match is utilized for the geoacoustic parameter inversion. ...
A time domain geoacoustic inversion method using ship noise received on a towed horizontal array is presented. ...
parameters on the shallow water sound propagation. ...
doi:10.1121/1.1862574
pmid:15898638
fatcat:sgfwujv4vbeole3knqmwtwis3u
Adjoint approach to the physical characterization of a shallow‐water environment
2006
Journal of the Acoustical Society of America
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We will demonstrate this for a range-dependent inversion, in which in one case there is a bottom inclusion ͑bottom properties are abruptly different over some range interval between the source and receiver͒ ...
Adjoint approach to the physical characterization of a shallow-water environment. ...
Contributed Paper
3:00-3:20 Break
Invited Papers Bathymetry inversion in shallow water using an adjoint method. ...
doi:10.1121/1.4786045
fatcat:z7pqy4e42jh4xivtoa6ppuyibq
Sequential Geoacoustic Inversion Using an Improved Kalman Particle Filter
2020
Journal of Marine Science and Engineering
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In this paper, an ensemble Kalman Particle filter is described to address the sequential geoacoustic inversion problem of range-dependent environment in shallow water. ...
Geoacoustic inversion is an efficient method to study the physical properties and structure of ocean bottom while sequential geoacoustic inversion is a challenging task due to the complexity and non-linearity ...
A variety of different inversion techniques have been applied in geoacoustic models, including matched field processing [1] [2] [3] , bottom reflection analysis [4] , and model dispersion inversion ...
doi:10.3390/jmse8120974
fatcat:vybllxrgafh4lpf5sqderts5tq
Single parameter description of seafloors for shallow oceans
2008
Journal of the Acoustical Society of America
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This simplified description of bottom loss function has been incorporated in studies of shallow water transmission, reverberation and signal excess by Harrison [4] . ...
Introduction For small grazing angles β, typical of shallow water transmission, it is well established that the loss in dB on each bottom reflection may be approximated as proportional to the grazing angle ...
doi:10.1121/1.2933399
fatcat:a6zpn3rz4vdntodpd35js7lhjy
Geoacoustic Inversion Using Backpropagation
2010
IEEE Journal of Oceanic Engineering
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Finally, the estimated geoacoustic parameters show that the experimental site in the vicinity of VLA1 is fairly homogeneous in bottom properties consisting of a 21 m thick sediment layer with sound speed ...
At each step, water column sound speed profile, experimental geometry and geoacoustic parameters are inverted successively. ...
The inversion approach is based on the method described in [8] that was applied to ship noise recorded on a horizontal towed array. ...
doi:10.1109/joe.2010.2040659
fatcat:fmlb7zpgarbhbeme7kcqwiosg4
Estimation of Geoacoustic Properties of Marine Sediment Using a Hybrid Differential Evolution Inversion Method
2010
IEEE Journal of Oceanic Engineering
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Strong reflections from the sediment layer were seen in the data for all of the sources. ...
This paper reports the inversion of midfrequency (1500-4500 Hz) chirps from a short-range transmission experiment conducted on the New Jersey Continental Shelf during the 2006 Shallow Water Experiment ...
Hodgkiss, for the acoustic data, Dr. D. Knobles for the navigation data, and Dr. J. Goff for the chirp seismic reflection data. ...
doi:10.1109/joe.2009.2025904
fatcat:dtedgvyxi5dyhg3vloscs3cvfm
Bayesian geoacoustic inversion of seabed reflection data at the New England mud patch
2017
Journal of the Acoustical Society of America
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inferring seabed properties using geoacoustic inversion methods such as reflection inversion. ...
Second, a trans-dimensional (trans-D) Bayesian inversion of reflection-coefficient data is carried out for geoacoustic parameters and uncertainties of fine-grained/cohesive sediments. ...
Holland for the measured data presented in this work, quality assurance at every step, and for being an excellent host during my visit to the Applied Research Laboratory at Penn State University; and the ...
doi:10.1121/1.5014487
fatcat:ij6awqflnzholcc3ki5vyzc454
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