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Crecimiento de la capa de hielo de Groenlandia: medición
Science (New York, N.Y.)
|December 22, 1989
Resumen
Groenlandia: Groenlandia es una de las islas más altas del mundo.
Área de la Ciencia:
- Glaciología glaciología.
- Geodesia por satélite La geodesia por satélite.
Sus antecedentes:
- Los cambios en la elevación de la capa de hielo son indicadores críticos de los impactos del cambio climático.
- La altimetría por satélite proporciona datos esenciales para el monitoreo de la dinámica del hielo polar.
Objetivo del estudio:
- Para cuantificar los cambios de elevación de la superficie de la capa de hielo de Groenlandia.
- Para determinar la velocidad vertical de la superficie de la capa de hielo utilizando datos satelitales.
Principales métodos:
- Utilizó datos de altimetría por satélite de las misiones Geosat y Seasat.
- Analizó los cambios de elevación de la superficie en numerosas intersecciones de caminos durante períodos de tiempo específicos.
Principales resultados:
- Se observó un aumento de la elevación de la superficie en la capa de hielo de Groenlandia al sur de los 72 grados de latitud norte.
- Se calculó una velocidad de superficie vertical de 0,20 +/- 0,06 metros por año (1978-1985) y 0,28 +/- 0,02 metros por año (1985-1986).
Conclusiones:
- La superficie de la capa de hielo de Groenlandia está experimentando una elevación.
- Las mediciones de altimetría por satélite confirman una significativa dinámica vertical de las capas de hielo.
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