Video Experimental Relacionado
Updated: May 22, 2026
06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
Evolución del siglo XXI de las velocidades de salida de los glaciares de Groenlandia
1Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA. twilap@uw.edu
Science (New York, N.Y.)
|May 5, 2012
Resumen
Groenlandia: Groenlandia es una de las islas más altas del mundo.
Área de la Ciencia:
- Glaciología glaciología.
- Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
- Observación de la Tierra Observación de la Tierra
Sus antecedentes:
- Las observaciones de principios del siglo XXI revelaron rápidos aumentos de velocidad en los glaciares de salida de Groenlandia.
- La dinámica de los glaciares es crucial para comprender el balance de masa de la capa de hielo y las contribuciones del nivel del mar.
Objetivo del estudio:
- Documentar la evolución de la velocidad de los principales glaciares de salida de Groenlandia durante una década (2000-2010).
- Para analizar patrones espaciales y temporales en el flujo de los glaciares.
- Evaluar las implicaciones para las proyecciones de aumento del nivel del mar.
Principales métodos:
- Datos combinados de múltiples misiones satelitales.
- Analizó los cambios de velocidad de más de 200 glaciares principales de salida.
- Se investigó la variabilidad regional e intrarregional en el flujo de los glaciares.
Principales resultados:
- Documentó complejos patrones espaciales y temporales en la velocidad de los glaciares durante una década.
- Se observaron cambios de velocidad contrastantes: aceleración en los glaciares que terminan en el mar, flujo constante en los glaciares que terminan en la plataforma de hielo y velocidades lentas en los glaciares que terminan en la tierra.
- Se identificaron tendencias regionales: aceleración constante en el noroeste, flujo variable en el sureste y flujo constante en otros lugares.
Conclusiones:
- Las tendencias de aceleración de los glaciares sugieren que el aumento del nivel del mar desde Groenlandia puede ser menor que los límites superiores.
- La respuesta de los glaciares al forzamiento es compleja, variando regional y localmente.
- El monitoreo continuo es esencial para refinar los modelos de aumento del nivel del mar.
Más Videos Relacionados
13:38Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
Published on: October 26, 2019
09:06Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
Published on: July 3, 2016
Videos de Conceptos Relacionados
01:10Instantaneous Velocity - II
Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of displacement with respect to time. Like average velocity, the instantaneous velocity is a vector with the dimensions of length per unit time. Instantaneous velocity can have both positive and negative values. The instantaneous velocity can be...
01:07Speciation Rates
Overview
01:15Instantaneous Velocity - I
The average velocity during a time interval cannot tell us how fast or in what direction a particle is moving at any given time during the interval. To calculate this, it is important to know the instantaneous velocity, which is the velocity at a specific instant of time or at a specific point along the path. Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity vx of an object is the limit of the average...
01:50Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
01:12Average and Instantaneous Velocity Vectors
To calculate other physical quantities in kinematics, the time variable must be introduced. The time variable not only allows us to state where an object is (its position) during its motion, but also how fast it’s moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position, a particular time is assigned. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity v. This...
01:11Velocity and Acceleration in Steady and Unsteady Flow
In fluid mechanics, velocity and acceleration are key concepts for analyzing particle motion in both steady and unsteady flow. Consider a fluid particle moving along a pathline, where its velocity depends on its position and time. The particle's acceleration is obtained by differentiating the velocity with respect to time.
The acceleration can be generalized to any point in the flow, and expressed as components along three perpendicular directions, representing changes in velocity over time.
The acceleration can be generalized to any point in the flow, and expressed as components along three perpendicular directions, representing changes in velocity over time.