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Updated: Jul 1, 2026

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Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
Published on: June 28, 2017
Las mediciones de gravedad por satélite confirman el derretimiento acelerado de la capa de hielo de Groenlandia
J L Chen1, C R Wilson, B D Tapley
1Center for Space Research, University of Texas at Austin, Austin, TX 78712, USA. chen@csr.utexas.edu
Resumen
Groenlandia: Groenlandia es una de las islas más altas del mundo.
Área de la Ciencia:
- Ciencias de la Tierra Ciencias de la Tierra Ciencias de la Tierra
- Ciencias del clima Ciencias del clima Ciencias del clima
- Glaciología glaciología.
Sus antecedentes:
- Los cambios en la masa de hielo en Groenlandia son fundamentales para comprender el aumento global del nivel del mar.
- Las observaciones por satélite son esenciales para monitorear los cambios criosféricos a gran escala.
Objetivo del estudio:
- Para estimar los cambios en la masa de hielo en Groenlandia desde abril de 2002 hasta noviembre de 2005.
- Para validar los datos de GRACE (Gravity Recovery and Climate Experiment) en comparación con otros métodos de teledetección.
Principales métodos:
- Utilizando mediciones de gravedad variable en el tiempo de la misión satelital GRACE.
- Aplicando correcciones para el filtrado espacial y la resolución limitada inherente a los datos de GRACE.
Principales resultados:
- Tasa total estimada de derretimiento del hielo en Groenlandia: -239 +/- 23 kilómetros cúbicos por año.
- La pérdida significativa de hielo se observó principalmente en el este de Groenlandia.
- Los datos de GRACE indican un derretimiento acelerado en el sureste de Groenlandia desde el verano de 2004.
Conclusiones:
- Los datos satelitales de GRACE proporcionan estimaciones confiables de la pérdida de masa de hielo de Groenlandia.
- Los hallazgos se alinean con las evaluaciones independientes utilizando interferometría de radar satelital.
- Las tendencias aceleradas de fusión en Groenlandia resaltan la necesidad de un monitoreo continuo.
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