Mass changes of alpine glaciers at the eastern margin of the Northern and Southern Patagonian Icefields between 2000 and 2012

Daniel Falaschi*, Tobias Bolch, Philipp Rastner, María Gabriela Lenzano, Luis Lenzano, Andrés Lo Vecchio, Silvana Moragues

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Despite renewed efforts to better understand glacier change and recognize glacier change trends in the Andes, relatively large areas in the Andes of Argentina and Chile are still not investigated. In this study, we report on glacier elevation and mass changes in the outer region of the Northern and Southern Patagonian Icefields in the Southern Patagonian Andes. A newly-compiled Landsat ETM+ derived glacier inventory (consisting of 2253 glaciers and ∼1314 ± 66 km2 of ice area) and differencing of the SRTM and SPOT5 DEMs were used to derive glacier-specific elevation changes over the 2000-12 period. The investigated glaciers showed a volume change of -0.71 ± 0.55 km3 a-1, yielding a surface lowering of 0.52 ± 0.35 m a-1 on average and an overall mass loss of 0.46 ± 0.37 m w.e. a-1. Highly variable individual glacier responses were observed and interestingly, they were less negative than previously reported for the neighboring Patagonian Icefields.

Original languageEnglish
Pages (from-to)258-272
Number of pages15
JournalJournal of Glaciology
Volume63
Issue number238
Early online date28 Dec 2016
DOIs
Publication statusPublished - Apr 2017

Keywords

  • glacier mass balance
  • glacier volume
  • mountain glaciers

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