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New order of marine creatures discovered among sea anemones
New order of marine creatures discovered sea anemones
2014/6/12
A deep-water creature once thought to be one of the world’s largest sea anemones, with tentacles reaching more than 6.5 feet long, actually belongs to a new order of animals. The finding is part of a ...
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...
Mean and Turbulent Structures of the Oceanic Surface layer as Determined from One-Dimensional, Third-Order Simulations
Oceanic Surface layer Turbulent Structures One-Dimensional Third-Order Simulations
2009/1/14
Various mechanisms that can drive the evolution of the oceanic surface boundary layer (OSBL) are numerically studied using a detailed turbulence-closure scheme. It is shown that stress and shear-drive...
Wind-Wave Nonlinearity Observed at the Sea Floor. Part II：Wavenumbers and Third-Order Statistics
Wind-Wave Nonlinearity Sea Floor Third-Order Statistics
2008/12/22
This is Part 2 of a study of nonlinear effects on natural wind-generated surface gravity waves in 13-m depth, 30 km offshore of Virginia. At the sea floor in this depth, free surface gravity waves are...
An ocean flow that has all its scales resolved on a model grid can be more efficiently calculated to within a required accuracy by using high-order numerics than by grid refinement with low-order nume...
A New Second-Order Turbulence Closure Scheme for Modeling the Oceanic Mixed Layer
Oceanic Mixed Layer Second-Order Turbulence
2008/10/27
A new second-order turbulence closure scheme is proposed for the oceanic mixed layer. The scheme is similar in complexity to a Mellor–Yamada level 2.5 scheme in that the turbulent kinetic energy is th...
Wave Crest Distributions: Observations and Second-Order Theory
Wave Crest Observations Second-Order Theory
2008/7/2
Many empirical and heuristic distribution functions for wave crest heights have been proposed, but their predictions differ considerably. Part of the lack of agreement is due to the difficulty of maki...
Eddy Fluxes and Second-Order Moment Balances for Nonhomogeneous Quasigeostrophic Turbulence in Wind-Driven Zonal Flows
Eddy Fluxes Second-Order Moment Balances Wind-Driven Zonal Flows
2008/7/1
The balances of momentum and second-order moments (potential enstrophy, energies, and potential vorticity flux) of wind-driven zonal flow, using a suite of numerical eddy resolving experiments in a tw...