Video Experimental Relacionado
Updated: Jul 5, 2026

06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Mantenimiento de fuertes vientos rotacionales en la atmósfera media de Venus por las mareas térmicas
Resumen
Venus Venus Venus es el nombre de Venus.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Ciencias de la atmósfera Ciencias atmosféricas.
- La aeronomía es la aeronomía.
Sus antecedentes:
- Venus exhibe una dinámica atmosférica extrema, con una súper rotación de la cima de la nube que excede ampliamente la tasa de rotación de la superficie del planeta.
- La circulación atmosférica es impulsada principalmente por la radiación solar absorbida dentro de las cubiertas de nubes venusianas.
Objetivo del estudio:
- Para investigar los mecanismos físicos responsables de la rápida rotación atmosférica de la cima de las nubes de Venus.
- Para probar la hipótesis de que las mareas térmicas y la circulación meridional media mantienen la súper rotación observada.
Principales métodos:
- Desarrollo y ejecución de avanzadas simulaciones por computadora para la atmósfera media de Venus (40-85 km).
- Modelación de la circulación atmosférica impulsada por la radiación solar absorbida en las capas de nubes.
- Iniciación de simulaciones con velocidades de rotación variables para evaluar la convergencia de los vientos de zona.
Principales resultados:
- Las simulaciones reproducen con éxito la tasa de rotación de Venus observada en la cima de la nube.
- Los resultados del modelo muestran fuertes tijeras de viento verticales por encima y por debajo de las nubes.
- Los chorros de latitudes medias simulados y el flujo hacia los polos en el lado diurno se alinean con las observaciones.
- Las circulaciones simuladas convergen a vientos de zona consistentes independientemente de las velocidades de rotación iniciales.
Conclusiones:
- El estudio apoya la hipótesis de que la súper rotación de la cima de las nubes de Venus se mantiene por un equilibrio entre los flujos de momento de las mareas térmicas y la advección por la circulación meridional media.
- Este mecanismo de equilibrio explica la rápida rotación atmosférica observada en Venus.
- Los hallazgos proporcionan información crucial sobre la compleja dinámica atmosférica de Venus.
Más Videos Relacionados
Videos de Conceptos Relacionados
Magnetostatic Boundary Conditions
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
Radiation Pressure: Problem Solving
The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...
Centrifugal Force
Pseudo forces, or fictitious forces, appear to act on an object in motion in a rotating frame of reference with respect to an inertial reference frame. These forces are not real forces but rather mathematical constructs and are introduced to simplify calculations in a non-inertial frame while using Newton's laws of motion. Common examples of pseudo forces include centrifugal, Coriolis, and Euler forces. These forces are essential in fields such as mechanics, astrophysics, and fluid dynamics,...
Variation of Atmospheric Pressure
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Coriolis Force
An accelerating particle experiences a force equal to the mass multiplied by the acceleration in an inertial frame of reference. Consider a particle in a non-inertial frame of reference, such as a sliding ball on a rotating table. The acceleration of the ball in this rotating reference frame is different than in the intertial frame, which modifies its equation of motion. The fictitious forces acting additionally on a rotating frame of reference alter Newton's Second Law expression. Centripetal...
Steady, Laminar Flow Between Parallel Plates
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.

