搜索结果: 1-15 共查到“海洋物理学 Subduction”相关记录15条 . 查询时间(0.109 秒)
On the Relationship between Subduction Rates and Diabatic Forcing of the Mixed Layer
Subduction Rates Diabatic Forcing Mixed Layer
2008/12/24
The transport of mass between a mixed layer, exposed to mechanical and thermodynamic forcing, and an adiabatic thermocline is studied for gyre-scale motions. It is shown that if the mixed layer can be...
Inferring the Subduction Rate and Period over the North Atlantic
Subduction Rate North Atlantic mixed-layer fluid
2008/12/18
The annual rate at which mixed-layer fluid is transferred into the permanent thermocline—that is, the annual subduction rate Sann and the effective subduction period eff—is inferred from climatologica...
Ventilation of the North Atlantic and North Pacific：Subduction Versus Obduction
North Atlantic North Pacific Subduction Versus Obduction
2008/12/12
Ventilation in the North Atlantic and North Pacific is examined by analyzing the Levitus climatological data and the Hellerman and Rosenstein wind stress data. Ventilation between the permanent pycnoc...
On the Thermodynamics of Subduction
surface mixed layer ideal-fluid thermocline Thermodynamics
2008/12/11
The thermodynamic processes attendant on the transfer of fluid between a surface mixed layer and a stratified thermocline beneath are discussed. For a parcel of fluid in the mixed layer to pass into t...
Shallow Pycnoclines and Mode Water Subduction in the Eastern North Atlantic
Shallow Pycnoclines Eastern North Atlantic Subpolar Mode Water
2008/12/3
A Lagrangian one-dimensional model is used to study the subduction of Subpolar Mode Water in the eastern North Atlantic and to analyze recently observed hydrological features related to this process.
A Numerical Investigation of Effects of a Tilt of the Zero Wind Stress Curl Line on the Subduction Process
three-dimensional ocean general circulation model nonzonal wind stress curl
2008/11/18
A three-dimensional ocean general circulation model is used to investigate the effects of an idealized, nonzonal wind stress curl on the subduction process in the subtropical gyre. Idealized zonal win...
Evolution of Subduction Planetary Waves with Application to North Pacific Decadal Thermocline Variability
Subduction Planetary Waves North Pacific Decadal Thermocline Variability
2008/8/13
The evolution of decadal subduction temperature anomalies in the subtropical North Pacific is studied using a simple and a complex ocean model. It is found that the amplitude of the temperature anomal...
Mesoscale Subduction at the Antarctic Polar Front Driven by Baroclinic Instability
Mesoscale Subduction Antarctic Polar Front Driven Baroclinic Instability
2008/8/7
A study of mesoscale subduction at the Antarctic Polar Front (PF) is conducted by use of hydrographic data from a high-resolution, quasi-synoptic survey of the front. The geostrophic velocity and isop...
Interannual Variability in the Thermodynamics of Subduction over the North Atlantic
Interannual Variability Subduction North Atlantic
2008/7/25
Subduction requires a buoyancy input into the mixed layer, which over the gyre scale can either be achieved by an atmospheric input or a wind-induced Ekman redistribution of buoyancy. The buoyancy bud...
A Numerical Investigation of the Subduction Process in Response to an Abrupt Intensification of the Westerlies
Numerical Investigation Subduction Process Abrupt Intensification Westerlies
2008/7/17
A three-dimensional ocean general circulation model, forced by idealized zonal winds, is used to investigate the effect of an abrupt intensification of westerly winds on the subduction process. Four e...
Subduction of Decadal North Pacific Temperature Anomalies: Observations and Dynamics
Subduction Decadal North Pacific Temperature Dynamics
2008/7/10
Observations of oceanic temperature in the upper 400 m reveal decadal signals that propagate in the thermocline along lines of constant potential vorticity from the ventilation region in the central N...
Subduction is the process by which fluid transfers from the mixed layer to the interior of the ocean. South of the Gulf Stream extension, 18° mode water is formed in a region of high subduction rates....
Formation of Southern Hemisphere Thermocline Waters: Water Mass Conversion and Subduction
Southern Hemisphere Thermocline Water Mass Subduction
2008/6/20
The ventilation of the permanent thermocline of the Southern Hemisphere gyres is quantified using climatological and synoptic observational data. Ventilation is estimated with three independent method...
Subduction along a Midocean Front and the Generation of Intrathermocline Eddies: A Theoretical Study
Subduction Midocean Front Intrathermocline Eddies Theoretical Study
2008/6/9
Through an idealized model, the authors consider the dynamics of subduction along a midocean front and its linkage to the intrathermocline eddies (ITEs). The subduction is necessitated by advective–di...
Subduction of the North Pacific Mode Waters in a Global High-Resolution GCM
Subduction North Pacific Mode Waters Global High-Resolution GCM
2008/6/4
The annual subduction rate in the North Pacific is estimated using five-day outputs from a high-resolution general circulation model (GCM). Two maxima (>200 m yr−1) are found in the western Nort...