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南方科技大学海洋科学与工程系（简称“海洋系”）海洋磁学中心（Centre for Marine Magnetism, CM2）团队在海洋结核与结壳的古环境研究中取得新进展，提出了一种全新的方法，可用来研究洋流活动。相关研究成果近日以“A magnetic approach to unravelling the paleoenvironmental significance of nanometer...
The Role of Ekman flow and Planetary Waves in the Oceanic Cross-Equatorial Heat Transport
Ekman flow Oceanic Cross-Equatorial Heat Transport Planetary Waves
2009/2/16
A numerical model is used to mechanistically simulate the oceans’ seasonal cross-equatorial heat transport, and the results of Oort and Vonder Haar (1976). The basic process of Ekman pumping and drift...
Boundary-Forced Planetary Waves：A Simple Model Mid-Ocean Response to Strong Current Variability
Boundary-Forced Planetary Waves Mid-Ocean Response Strong Current Variability
2009/2/13
A simple linear model of the barotropic basin response to forcing imposed along the northern boundary is described. The dependence on latitude of the response may include oscillatory behavior or not, ...
On Wind-Driven Current and Temperature Profiles with Diurnal Period in the Oceanic Planetary Boundary Layer
Wind-Driven Current Diurnal Period Temperature Profiles
2009/2/13
This paper describes a physically reliable model of the ocean surface layer. A Richardson-number-dependent stability function obtained from atmospheric boundary-layer data is applied to the oceanic la...
Evidence of a 4–6 Day Barotropic, Planetary Oscillation of the Pacific Ocean
Planetary Oscillation Pacific Ocean 4–6 Day Barotropic
2009/2/7
Spectral analysis of scattered island and coastal tide-gage records from the Pacific Ocean reveals the presence of a coherent sea level fluctuation at 4–6 days period. The oscillation is distinct from...
On the Evolution of Nonlinear Planetary Eddies Larger than the Radius of Deformation
Nonlinear Planetary Eddies Larger planetary eddies
2009/2/7
The properties of a new equation governing the evolution of planetary eddies larger than the radius of deformation are numerically investigated. Two types of dynamical balances showing remarkable soli...
Boundary-Forced Nonlinear Planetary Radiation
Gulf Stream system Korteweg-de Vries Nonlinear Planetary Radiation
2009/1/20
In recent years there has been renewed interest in the Gulf Stream system and its interaction with the mesoscale oceanic eddy field. An important question, not yet adequately addressed, concern the po...
Nondivergent Planetary Oscillations in Midlatitude Ocean Basins with Continental Shelves
Planetary Oscillations Midlatitude Ocean Basins Continental Shelves
2009/1/13
Free oscillations in square, midlatitude basins with continental shelves and planetary vorticity gradients are numerically computed using the nondivergent shallow-water equations. The topography may r...
Free Planetary Waves in Finite-Difference Numerical Models
Free Planetary Waves Finite-Difference Numerical Models
2009/1/12
The effects of spatial finite-differencing, viscosity and diffusion on unbounded planetary waves in numerical models are investigated using a quasi-geostrophic approximation to the midlatitude, β-plan...
A Planetary Wave Analysis Using the Acoustic and Conventional Arrays in the 1981 Ocean Tomography Experiment
Planetary Wave Analysis Conventional Arrays Ocean Tomography Experiment
2009/1/8
Using the maximum likelihood estimation method, quasi-geostrophic wave solutions are fitted to the observations of the 1981 Ocean Acoustic Tomography Experiment. The experiment occupied a 300 km squar...
A number of general circulation models have recently been proposed that compute the steady-state structure of the general circulation. Observation of 18°C water formation, on the other hand, suggest t...
Finite Amplitude Effects on Deep Planetary Circulation over Topography
Finite Amplitude Effects Topography Deep Planetary Circulation
2009/1/5
Steady flow over large-scale bathymetric changes of a uniform zonal current in a two-layer fluid is studied under the assumptions that it is geostrophic, that relative vorticity can be ignored, that v...
Deep Planetary Circulation and Topography：Simple Models of Midocean Flows
Deep Planetary Circulation Midocean Flows Topography
2009/1/4
The presence of broad, flowing water masses in the deep ocean requires dynamical explanation. Vertical density diffusion andβ-effect are invoked in classical theories; here we show how topographic pot...
Measurements of a Barotropic Planetary Vorticity Mode in an Eddy-Resolving Quasi-geostrophic Model Using Acoustic Tomography
Barotropic Planetary Vorticity Mode Eddy-Resolving Quasi-geostrophic Model Acoustic Tomography
2009/1/4
An acoustic source and receiver are placed at 800 m depth and are separated by 4000 km in a two-layer, steady-wind driven, flat bottom eddy-resolving quasi-geostrophic circulation model. Time series o...
The Speed of Observed and Theoretical Long Extratropical Planetary Waves
Theoretical Long Extratropical Planetary Waves Rossby waves
2008/11/26
Planetary or Rossby waves are the predominant way in which the ocean adjusts on long (year to decade) timescales. The motion of long planetary waves is westward, at speeds 1 cm s−1. Until recent...