Video Experimental Relacionado
Updated: May 23, 2026
06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
El colapso de las capas de hielo y el aumento del nivel del mar en el calentamiento de Bølling hace 14.600 años
Pierre Deschamps1, Nicolas Durand, Edouard Bard
1CEREGE, UMR Aix-Marseille Université - CNRS - IRD - College de France, Technopole de l'Arbois, BP 80, 13545 Aix-en-Provence Cedex 4, France. deschamps@cerege.fr
Nature
|March 31, 2012
Resumen
La última deglaciación presentó un rápido aumento del nivel del mar, conocido como pulso de agua de deshielo 1A (MWP-1A), entre hace 14.650 y 14.310 años. Este evento, vinculado al derretimiento del hielo en el hemisferio sur, provocó que el nivel del mar subiera más de 12 metros en menos de 500 años.
Área de la Ciencia:
- Paleoceanografía y paleoclimatología.
- Dinámica de las capas de hielo Dinámica de las capas de hielo
- Reconstrucción del nivel del mar Reconstrucción del nivel del mar.
Sus antecedentes:
- Los registros anteriores del nivel del mar son cruciales para comprender las respuestas de las capas de hielo al cambio climático.
- La última deglaciación estuvo marcada por importantes fluctuaciones del nivel del mar, incluido un período debatido de aumento rápido (pulso de agua de deshielo 1A, MWP-1A).
- La incertidumbre rodea el momento, la magnitud y la fuente de MWP-1A, lo que dificulta su conexión con los cambios climáticos abruptos.
Más Videos Relacionados
Videos de Conceptos Relacionados
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.
01:50Threats to Biodiversity
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
01:22Effect of Sea Water on Concrete
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks, which undergo...
Concrete in areas between tide marks, which undergo...
01:27Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
01:16What is Climate?
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
03:12Freezing Point Depression and Boiling Point Elevation
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...