搜索结果: 1-15 共查到“海洋物理学 varying”相关记录17条 . 查询时间(0.171 秒)
On the existence of stable seasonally varying Arctic sea ice
existence stable seasonally varying Arctic sea ice
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2012/2/28
Within the framework lower order thermodynamic theories for the climatic evolution of Arctic sea ice we isolate the conditions required for the existence of stable seasonally-varying ice states. This ...
Wavelet ridge diagnosis of time-varying elliptical signals with application to an oceanic eddy
Wavelet ridge diagnosis time-varying elliptical signals oceanic eddy
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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...
Finite-Amplitude Baroclinic Disturbances in Downstream Varying Currents
Finite-Amplitude Baroclinic Disturbances Downstream Varying Currents
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2009/3/7
The finite-amplitude dynamics of baroclinic disturbances in currents whose cross-stream structure varies in the downstream direction is investigated.
It is first shown under what circumstances downst...
Numerical Simulation Studies for Oceanic Anomalies in the North Pacific Basin：II. Seasonally Varying Motions and Structures
Numerical Simulation Studies Seasonally Varying Motions Oceanic Anomalies
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2009/2/11
Seasonally varying currents and structures in the North Pacific Ocean are simulated by a baroclinic ocean model. The model has satisfactorily reproduced the gross nature of current systems and density...
Baroclinic Instability in a Downstream Varying Channel：Shelikof Strait, Alaska
Baroclinic Instability Shelikof Strait Downstream Varying Channel
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2009/2/10
Moored current-meter observations obtained from upstream and downstream locations in Shelikof Strait, between Kodiak and Afognak Islands and the Alaskan mainland in the northwest Gulf of Alaska, show...
Generation of Coastal Inertial Oscillations by Time-Varying Wind
Coastal Inertial Oscillations Time-Varying Wind
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2009/1/21
The excitation of coastal inertial oscillations by a rapidly varying wind is investigated. It is shown that the mean-square response to a completely random forcing is ¯2 δ2dt, where δ is the re...
Wind and Wave Induced Currents in a Rotating Sea with Depth-varying Eddy Viscosity
Wave Induced Currents Rotating Sea Depth-varying Eddy Viscosity
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2009/1/7
A theory is presented for time-dependent currents induced by a variable wind stress and wave field in deep water away from coastal boundaries. It is based on a second-order perturbation expansion of a...
The Effect of Varying Stratification on Low-Frequency Equatorial Motions
Low-Frequency Equatorial Motions equatorial wave phenomena
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2009/1/5
A formalism is developed to examine the effect of zonally varying stratification on equatorial wave phenomena; an effect present in the real ocean but neglected from standard linear theory. The approa...
Predictability of Quasi-geostrophic Ocean Flow: Sensitivity to Varying Model Vertical Resolution
Quasi-geostrophic Ocean Flow Vertical Resolution Gulf Stream
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2009/1/5
Results from a set of 2- and 3-mode quasi-geostrophic simulations are used to estimate the predictability time scale of a Gulf Stream-like flow and investigate the sensitivity of the predictability ti...
Propagation of an Equatorial Kelvin Wave in a Varying Thermocline
Equatorial Kelvin Wave Varying Thermocline
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2008/12/30
We look at the effect of a slow zonal variation in thermocline depth on the propagation of a finite-amplitude Kelvin wave pulse in a single layer model. Dispersive effects are included by also allowin...
A Third-Generation Model for Wind Waves on Slowly Varying, Unsteady, and Inhomogeneous Depths and Currents
wind waves arbitrary depth Third-Generation Model
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2008/12/23
A full discrete spectral model for propagation generation and dissipation of wind waves for arbitrary depth, current and wind fields is presented (WAVEWATCH). This model incorporates all relevant wave...
Thermocline Forced by Varying Ekman Pumping. Part II：Annual and Decadal Ekman Pumping
Thermocline variability Ekman pumping
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2008/12/19
Thermocline variability forced by zonally uniform Ekman pumping with annual to decadal periods is investigated. Both analytical and numerical solutions are obtained by the method of characteristics. A...
Thermocline Forced by Varying Ekman Pumping. Part I：Spinup and Spindown
A two-layer planetary geostrophic model Ekman pumping thermocline variability
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2008/12/19
A two-layer planetary geostrophic model is used to investigate the thermocline variability under a suddenly changing Ekman pumping. The effect of ventilation and the associated advection is particular...
Rapid Perturbation Growth on Spatially and Temporally Varying Oceanic Flows Determined Using an Adjoint Method：Application to the Gulf Stream
Rapid Perturbation Growth Temporally Varying Oceanic Flows Gulf Stream
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2008/12/19
The stability of the Gulf Stream flow predicted by a nonlinear quasigeostrophic model is examined by employing an iterative method, which uses both the tangent linear equations and the adjoint tangent...
The Behavior of the Bulk——Skin Sea Surface Temperature Difference under Varying Wind Speed and Heat Flux
Bulk——Skin Sea Surface Temperature Heat Flux Wind Speed
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2008/12/10
The observed and predicted response of the bulk – skin sea surface temperature difference (δT) to changes in the wind speed and net heat flux is analyzed. Observations of δT from the northern Atlantic...