搜索结果: 1-15 共查到“理学 Rossby Wave”相关记录20条 . 查询时间(0.051 秒)
Quasi-biennial oscillations in the solar tachocline caused by magnetic Rossby wave instabilities
Sun oscillations Physical Data and Processes magnetic fields MHD—waves
2010/11/11
Quasi-biennial oscillations (QBO) are frequently observed in the solar activity indices. However, no clear physical mechanism for the observed variations has been suggested so far. Here we study the s...
The problem of the null-modes existence and some particularities of their interaction with nonlinear vortex-wave-like structures is discussed. We show that the null-modes are fundamental elements of n...
Rossby-wave turbulence in a rapidly rotating sphere
Rossby-wave turbulence rapidly rotating sphere
2009/11/11
We use a quasi-geostrophic numerical model to study the turbulence of rotating flows in a sphere, with realistic Ekman friction and bulk viscous dissipation. The forcing is caused by the destabilizati...
On the Annual Rossby Wave in the Tropical North Pacific Ocean
Annual Rossby Wave Tropical North Pacific Ocean
2009/2/13
Annual variation in the depth of the 14°C isotherm (i.e., the main thermocline) throughout the tropical Pacific Ocean between 30°N and 30°S is studied on the basis of 156 000 bathythermographs. Large-...
Rossby Wave Driven Eulerian Mean Flows Along Non-Zonal Barriers, with Application to the Hawaiian Ridge
Rossby Wave Non-Zonal Barriers Hawaiian Ridge
2009/2/6
We show that the reflection of baroclinic Rossby waves from a non-zonal barrier generates a Eulerian mean flow along the barrier. In order to produce a mean current of realistic magnitude, friction (i...
Rossby Wave Analysis of Subsurface Temperature Fluctuations along the Honolulu-San Francisco Great Circle
Rossby Wave Subsurface Temperature Fluctuations Honolulu-San Francisco Great Circle
2009/1/22
Seven years of XBT observations collected between Honolulu and San Francisco reveal subsurface temperature fluctuations with strong, in-phase vertical coherence and fair horizontal coherence over 1000...
Rossby Wave Radiation from a Strongly Nonlinear Warm Eddy
Wave Radiation Nonlinear Warm Eddy
2009/1/19
One of the serious flaws in the standard quasi-geostrophic equations, commonly used for understanding the evolution of mesoscale eddies, is the requirement that the change in thickness between density...
The Annual Rossby Wave in the Central Equatorial Pacific Ocean
Annual Rossby Wave Central Equatorial Pacific Ocean
2009/1/14
We attribute observed annual variations in the subthermocline thermal structure of the central equatorial Pacific to a forced gravest-meridional-mode Rossby wave. In the region between 300 and 800 m (...
Annual Rossby Wave Characteristics in the California Current Region from the GEOSAT Exact Repeat Mission
Exact Repeat Mission Complex empirical orthogonal function Rossby Wave Characteristics
2008/12/27
Examination of sea level variability in the California Current region, from 20° to 50°N and from the coast of North America to 140°W, was made possible with altimetric observations obtained by the GEO...
Rossby Wave Scattering by a Meridional Line Barrier in an Infinitely Long Zonal Channel
Rossby Wave Scattering Meridional Line Barrier Infinitely Long Zonal Channel
2008/12/23
The interaction of a prescribed channel mode Rossby wave with a meridional line barrier situated in an infinitely long, zonally aligned channel is considered. An analytical solution for the scattered ...
Rossby Wave Radiation in the Cape Verde Frontal Zone
Rossby Wave Radiation Cape Verde Frontal Zone
2008/12/22
Radiating baroclinic Rossby waves excited through instability of the Cape Verde frontal zone are proposed as a mechanism for the generation of mesoscale variability at middepth (1000 m) in the southea...
The Annual Wind-driven Rossby Wave in the Subthermocline Equatorial Pacific
Wind-driven Rossby Wave Subthermocline Equatorial Pacific
2008/12/18
The annual cycle of temperature in the subthermocline equatorial Pacific is studied using a new compilation of historical hydrographic profiles. The observations have several characteristics suggestiv...
Rossby Wave–Coastal Kelvin Wave Interaction in the Extratropics. Part I: Low-Frequency Adjustment in a Closed Basin
Rossby Wave–Coastal Kelvin Wave Interaction Low-Frequency Adjustment Closed Basin
2008/7/22
The interaction of open and coastal oceans in a midlatitude ocean basin is investigated in light of Rossby and coastal Kelvin waves. The basinwide pressure adjustment to an initial Rossby wave packet ...
Rossby Wave–Coastal Kelvin Wave Interaction in the Extratropics. Part II: Formation of Island Circulation
Rossby Wave–Coastal Kelvin Wave Interaction Island Circulation
2008/7/22
The formation of an island circulation is investigated both theoretically and numerically in light of the dynamics of coastal Kelvin waves and Rossby waves. An island circulation is formed in three st...
The Observed Dispersion Relationship for North Pacific Rossby Wave Motions
Observed Dispersion Relationship North Pacific Rossby Wave Motions
2008/7/21
The phase speeds of ocean surface height variability obtained by analyzing the time–longitude sections of altimetric anomalies have been widely reported as being generally faster than those of free, f...