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Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
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Published on: October 26, 2019

Cambios en el nivel del mar durante el último ciclo glacial.

K Lambeck1, J Chappell

  • 1Research School of Earth Sciences, The Australian National University, Canberra 0200, Australia.

Science (New York, N.Y.)
|April 28, 2001
PubMed
Resumen

Los cambios cuaternarios del nivel del mar, impulsados por los ciclos de las capas de hielo, revelan variaciones en la masa de hielo y respuestas del manto. Estos conocimientos ayudan a predecir los desplazamientos de la costa durante los ciclos glaciales.

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Área de la Ciencia:

  • Paleoceanografía y Glaciología.
  • Tierra sólida Geofísica Geofísica de la Tierra sólida

Sus antecedentes:

  • Las fluctuaciones cuaternarias del nivel del mar son impulsadas principalmente por el crecimiento cíclico y la desintegración de las capas de hielo de la Tierra.
  • Estos cambios crean patrones espaciales y temporales complejos que influyen en las costas globales.

Objetivo del estudio:

  • Para limitar el tiempo, las tasas y las magnitudes de los cambios en la masa de hielo durante los ciclos glaciales.
  • Para entender la distribución de la masa de hielo entre las principales capas de hielo.
  • Para investigar la respuesta del manto a la carga de la superficie glacial en escalas de tiempo geológicas.

Principales métodos:

  • Análisis de los datos de observación sobre los cambios en el nivel del mar inducidos por la glaciación.
  • Análisis regionales de la función de respuesta de la tierra para comprender el comportamiento del manto.
  • Desarrollo de modelos integrales de cambio del nivel del mar.

Principales resultados:

  • La variabilidad del nivel del mar proporciona datos críticos sobre la dinámica de la capa de hielo y el balance de masas.
  • La respuesta del manto a la carga superficial es a la vez dependiente de la profundidad y espacialmente variable.
  • Los modelos pueden predecir la migración de la costa durante los ciclos glaciales.

Conclusiones:

  • Comprender los cambios del nivel del mar en el pasado es crucial para predecir la dinámica costera futura.
  • Los ciclos glaciales impactan significativamente las capas de hielo, el manto y las costas de la Tierra.
  • Modelado integral ayuda en la reconstrucción del pasado y la predicción de futuros escenarios del nivel del mar.