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Contribución sustancial al aumento del nivel del mar durante el último interglacial de la capa de hielo de
1Department of Geography, University of California, Berkeley 94720-4740, USA. kcuffey@socrates.berkeley.edu
Nature
|April 15, 2000
Resumen
La capa de hielo de Groenlandia fue más pequeña y más empinada durante el período Eémio, lo que contribuyó significativamente al aumento del nivel del mar. Esto sugiere que los niveles del mar de Eemian no se debieron únicamente al derretimiento de la capa de hielo de la Antártida Occidental.
Área de la Ciencia:
- Paleoclimatología Paleoclimatología
- Glaciología glaciología.
- Ciencias del clima Ciencias del clima Ciencias del clima
Sus antecedentes:
- Los niveles del mar interglacial de Eemian eran significativamente más altos que los actuales.
- Los modelos anteriores sugirieron una contribución limitada de la capa de hielo de Groenlandia al aumento del nivel del mar en Eemian.
Objetivo del estudio:
- Reevaluar la contribución de la capa de hielo de Groenlandia a las elevaciones del nivel del mar en Eemian.
- Para conciliar los datos de núcleos de hielo con los modelos climáticos con respecto al comportamiento de la capa de hielo.
Principales métodos:
- Modelado numérico de la dinámica de las capas de hielo.
- Análisis de datos recientes de núcleos de hielo del centro de Groenlandia.
Principales resultados:
- La capa de hielo de Groenlandia fue más pequeña y más empinada durante el Eemio.
- El agua de deshielo de Groenlandia contribuyó plausiblemente de 4 a 5,5 metros a los niveles del mar de Eemian.
- Las alturas del nivel del mar de Eemian probablemente involucraron sustancial agua de fusión de Groenlandia.
Conclusiones:
- Los niveles del mar en Eemian fueron influenciados por una contribución significativa de la capa de hielo de Groenlandia.
- Los altos niveles del mar de Eemian no implican necesariamente una mayor desintegración de la capa de hielo de la Antártida Occidental.
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