Radar sounding using the Cassini altimeter waveform modeling and Monte Carlo approach for data inversion observations of Titan's seas [PDF]
, 2016 Recently, the Cassini RADAR has been used as a sounder to probe the depth and constrain the composition of hydrocarbon seas on Saturn's largest moon, Titan.
Hayes, A. +5 more
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Depth inversion in shallow water based on nonlinear properties of shoaling periodic waves [PDF]
Coastal Engineering, 1998 Abstract Two depth inversion algorithms (DIA) applicable to coastal waters are developed, calibrated, and validated based on results of computations of periodic waves shoaling over mild slopes, in a two-dimensional numerical wave tank based on fully nonlinear potential flow (FNPF) theory.
openaire +2 more sources
Inversions of statistical parameters of an acoustic signal in range-dependent environments with applications in ocean acoustic tomography [PDF]
, 2012 The paper presents an application of a method for the characterization of underwater acoustic signals based on the statistics of their wavelet transform sub-band coefficients in range-dependent environments. As it was illustrated in previous works, this
Smaragdakis, Costas, Taroudakis, Michael
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Uncertainties and shortcomings of ground surface temperature histories derived from inversion of temperature logs [PDF]
, 2005 Analysing borehole temperature data in terms of ground surface history can add useful information to reconstructions of past climates. Therefore, a rigorous assessment of uncertainties and error sources is a necessary prerequisite for the meaningful ...
Hartmann, Andreas, Rath, Volker
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Assessing rooting depths of an austrian pine stand by inverse modeling soil water content maps [PDF]
Water Resources Research, 1999 Rooting depths in a forested stand (0.11 ha) were estimated indirectly by inverse modeling maps of soil water contents from time domain reflectometry (TDR) measurements at 150 points. These maps were described with a calibrated one‐dimensional soil water flow model, with specific values for the rooting depth, van Genuchten's [1980] α parameter, and ...
P. A. D. Musters, W. Bouten
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Single-hydrophone Bayesian matched-field geoacoustic inversiona) [PDF]
JASA Express LettersThis paper presents Bayesian matched-field geoacoustic inversion results based on measurements from a single hydrophone. To efficiently compute the posterior distribution, we employ an adaptive Metropolis–Hastings sampling strategy, which dynamically ...
Yongsung Park +3 more
doaj +1 more source
Characterisation of subglacial water using a constrained transdimensional Bayesian transient electromagnetic inversion [PDF]
Solid Earth, 2020 Subglacial water modulates glacier-bed friction and therefore is of fundamental importance when characterising the dynamics of ice masses. The state of subglacial pore water, whether liquid or frozen, is associated with differences in electrical ...
S. F. Killingbeck +4 more
doaj +1 more source
Inversion of shallow water depth from GF-6 multispectral remote sensing image
, 2023 Abstract Aiming at the shallow water depth which is difficult to be measured by traditional ship-borne acoustics, this paper establishes four machine learning models, namely Random forest (RF) model, Gradient Boosting Decision Tree(GBDT) model, extreme gradient boos(XGBoost) model and Support Vector Regression(SVR) model, by using the domestic ...
Yunling Zhang +6 more
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Remote SensingHyperspectral remote sensing images offer a unique opportunity to quickly monitor water depth, but how to utilize the enriched spectral information and improve its spatial resolution remains a challenge.
Shuangyin Zhang +7 more
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Estimation of the properties of a range-dependent ocean environment. A simulation study [PDF]
, 2001 Rep 03/01 - SiPLAB 26/October/2001This report describes a simulation study to estimate the range and depth variations of ocean acoustic properties. The estimation is based on matched- eld inversion.
Corré, V.
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