Balance de masa geodésico 2000-2011 de los glaciares de la Cuenca Del Río Atuel, Andes Centrales de Mendoza (Argentina)

Autores/as

  • Daniel Falaschi Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales IANIGLA-CONICET
  • Maria Gabriela Lenzano Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales IANIGLA-CONICET
  • Takeo Tadono Earth Observation Research Center (EORC), Japan Aerospace Exploration Agency (JAXA),
  • Alberto Ismael Vich Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales IANIGLA-CONICET
  • Luis Eduardo Lenzano Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales IANIGLA-CONICET

Palabras clave:

balance de masa geodésico, Río Atuel, Andes Centrales de Argentina

Resumen

A pesar de ser una de las cadenas montañosas más largas y con mayor cobertura glaciar del mundo, existen vastas áreas de la Cordillera de los Andes donde las tendencias de cambio glaciar son poco conocidas. El presente estudio provee la primera estimación de los cambios de elevación, masa y volumen para 198 glaciares (90.74 km2) de la cuenca del río Atuel en los Andes mendocinos de Argentina, para el período comprendido entre los años 2000-2011. Mediante el método del balance de masa geodésico (diferenciación de los MDEs SRTM y ALOS PRISM) se determinó, en término medio, un adelgazamiento de -0.24 ±0.31 m a-1, de los glaciares investigados. Esto equivale a un cambio de volumen de -0.022 ±0.028 km3 a-1 y una pérdida de masa de -0.20 ±027. m a.eq. a-1. Esta tendencia regional de adelgazamiento moderado es menor que la que resulta de los registros previos de balances de masa de los Andes Centrales y Andes Patagónicos Australes. Los mapas de cambio de elevación de la superficie glaciar permitieron además reconocer el colapso masivo del glaciar Portezuelo de Las Leñas.

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Publicado

2017-11-06

Cómo citar

Falaschi, D., Lenzano, M. G., Tadono, T., Vich, A. I., & Lenzano, L. E. (2017). Balance de masa geodésico 2000-2011 de los glaciares de la Cuenca Del Río Atuel, Andes Centrales de Mendoza (Argentina). Geoacta, 42(2), 7–22. Recuperado a partir de https://revistas.unlp.edu.ar/geoacta/article/view/13593

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Artículos científicos