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Time-domain Analysis of FPSO-tanker Responses in Tandem Offloading Operation
FPSO tanker tandem offloading time-domain simulation
2011/9/9
Problems experienced during Floating Production, Storage and Offloading (FPSO) tandem offloading operations were investigated. The aim of this research was to improve the reliability of such systems, ...
Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body
wave-current diffraction time-domain simulation drift force higher-order boundary element method
2011/9/9
To study wave-current actions on 3-D bodies a time-domain numerical model was established using a higher-order boundary element method (HOBEM). By assuming small flow velocities, the velocity potentia...
Nonlinear dynamics of wind waves:multifractal phase/time effects
Nonlinear dynamics of wind waves multifractal phase time effects
2009/11/16
In addition to the bispectral coherence method, phase/time analysis of analytic signals is another promising avenue for the investigation of phase effects in wind waves. Frequency spectra of phase flu...
Statistical characteristics of irreversible predictability time in regional ocean models
Statistical characteristics irreversible predictability time regional ocean models
2009/11/9
Probabilistic aspects of regional ocean model predictability is analyzed using the probability density function (PDF) of the irreversible predictability time (IPT) (called τ-PDF) computed from an unco...
Wavelet ridge diagnosis of time-varying elliptical signals with application to an oceanic eddy
Wavelet ridge diagnosis time-varying elliptical signals oceanic eddy
2009/11/9
A method for diagnosing the physical properties of a time-varying ellipse is presented. This essentially involves extending the notion of instantaneous frequency to the bivariate case. New complicatio...
Efficient estimation of time-mean states of ocean models using 4D-Var and implicit time-stepping
Efficient estimation time-mean states ocean models 4D-Var implicit time-stepping
2009/11/3
We propose an efficient method for estimating a time-mean state of an ocean model subject to given observations using implicit time-stepping. The new method uses (i) an implicit implementation of the ...
A model describing the time-dependent modification of the upper mixed layer of the ocean by meteorological influences is developed. The turbulent mixing and the radiative heating within the mixed laye...
Linear and nonlinear two-layer ocean circulation models of coastal upwelling on an f-plane are driven by time-dependent winds and solved numerically. Longshore variations in the circulation are neglec...
Time and Length Scales of Baroclinic Eddies in the Central North Pacific Ocean
Length Scales Baroclinic Eddies Central North Pacific Ocean
2009/3/26
The time and length scales of baroclinic eddies in the eastern half of the North Pacific Subtropical Gyre are examined using four data sets: 1) single vertical sections of temperature, based on closel...
Transient Gulf Stream Meandering. Part II：Analysis via a Quasi-Geostrophic Time-Dependent Model
Transient Gulf Stream Meandering Quasi-Geostrophic Time-Dependent Model
2009/3/26
Simultaneous path and bottom velocity measurements made during the Transient Meander Experiment, reported in Part I, are analyzed in terms of a quasi-geostrophic thin jet model of the meandering Gulf ...
A Numerical Study of Time-Dependent Turbulent Ekman Layers over Horizontal and Sloping Bottoms
Time-Dependent Turbulent Ekman Layers Sloping Bottoms Horizontal
2009/3/24
A numerical study is made of a time-dependent turbulent Ekman bottom boundary layer. Parameters for the model were chosen to simulate conditions near the bottom of the Florida Current in the Straits o...
The Time-Dependent Response of a Circular Basin of Variable Depth to a Wind Stress
Time-Dependent Variable Depth Circular Basin Wind Stress
2009/3/7
By solving an initial value problem, the time-dependent response of a large circular model lake to a steady wind stress has been investigated. Bottom stress has been neglected. The forced response has...
Space/Time Structure of the Near-Surface Temperature Field During the NORPAX Pole Experiment
Near-Surface Temperature Field NORPAX Pole Experiment
2009/3/7
During January and February 1974 the NORPAX POLE experiment was carried out in the central Pacific to begin collection of data needed to design a large-scale ocean/atmosphere monitoring program. This ...
On the Interpretation of Ocean Current Spectra. Part 1：The Kinematics of Three-Dimensional Vector Time Series
Ocean Current Spectra Three-Dimensional Vector Time Series
2009/2/23
A general method for representing and interpreting the spectra of three-dimensional vector time series is outlined. Part I contains the formalism for the kinematic interpretation of a single vector ti...
A Model and Observations of Time-Dependent Upwelling over the Mid-Shelf and Slope
Time-Dependent Upwelling Mid-Shelf Slope
2009/2/19
A simple model of time-dependent quasi-geostrophic upwelling over an outer continental shelf and slope region is considered with the velocity assumed independent of the alongshore coordinate The flow ...