Video Experimental Relacionado
Updated: Jul 12, 2026
06:48
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
Published on: May 10, 2020
Nube de la falda asociada con la erupción de Soufriere del 17 de abril de 1979
Science (New York, N.Y.)
|June 4, 1982
Resumen
Una foto dramática reveló nubes de falda estructuradas durante la erupción Soufriere de 1979. Los investigadores proponen que las capas de aire húmedo deformadas por la columna de erupción formaron estas nubes volcánicas únicas.
Área de la Ciencia:
- Volcanología Volcanología.
- Ciencias de la atmósfera Ciencias atmosféricas.
- Meteorología Meteorología.
Sus antecedentes:
- Las erupciones volcánicas pueden impactar significativamente las condiciones atmosféricas.
- La formación de nubes está influenciada por la humedad atmosférica y la dinámica.
- La erupción Soufriere de 1979 produjo fenómenos visuales inusuales.
Objetivo del estudio:
- Para explicar la formación de las nubes de falda observadas durante la erupción de Soufriere de 1979.
- Para investigar la interacción entre las columnas de erupción volcánica y las capas atmosféricas.
Principales métodos:
- Análisis de una fotografía fortuita de la erupción de Soufriere.
- Aplicación de los principios meteorológicos para explicar la formación de nubes.
- Suponiendo la deformación de las capas de aire húmedo por la columna de erupción.
Principales resultados:
- La fotografía muestra claramente nubes de faldas altamente estructuradas.
- El mecanismo propuesto implica la deformación de capas de aire húmedo casi horizontales.
- Estas capas deformadas fueron transportadas a mayores altitudes, lo que condujo a la condensación y la formación de nubes.
Conclusiones:
- Las nubes de falda observadas durante la erupción de Soufriere de 1979 probablemente se formaron por la intensa deformación y elevación de las capas subhorizontales de aire húmedo.
- Este fenómeno pone de relieve la compleja interacción entre la actividad volcánica y la dinámica atmosférica.
- El estudio proporciona una explicación meteorológica para una formación de nubes volcánicas visualmente llamativa.
Videos de Conceptos Relacionados
01:12Precipitation Processes
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
03:10Precipitation Reactions
In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction occurs when oppositely charged ions in solution overcome their attraction for water and bind to each other, forming a precipitate that separates out from the solution. Since such reactions involve the exchange of ions between ionic compounds in aqueous solution, they are also referred to as double displacement, double replacement, exchange reactions, or...
01:17Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
01:25Rab Cascades
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
01:18Boundary Layer Characteristics
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
01:18Variation 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...