ID:
publications-1953
Type:
Peer reviewed articles
Year:
2024
Authors:
Johannes J. Fürst, David FarÃas-Barahona, Norbert Blindow, Gino Casassa, Guisella Gacitúa, Michèle Koppes, Emanuele Lodolo, Romain Millan, Masahiro Minowa, Jérémie Mouginot, MichaÅ‚ PÈ©tlicki, Eric Rignot, Andres Rivera, Pedro Skvarca, Martin Stuefer, Shin Sugiyama, José Uribe, Rodrigo Zamora, Matthias H. Braun, Fabien Gillet-Chaulet, Philipp Malz, Wolfgang J.-H. Meier & Marius Schaefer
Title:
The foundations of the Patagonian icefields
Venue/Journal:
Communications Earth & Environment
DOI:
10.1038/s43247-023-01193-7
Research type:
Data Management & Analytics
Water System:
Natural Water Bodies
Technical Focus:
Abstract:
AbstractThe two vast Patagonian icefields are a global hotspot for ice-loss. However, not much is known about the total ice volume they store - let alone its spatial distribution. One reason is that the abundant record of direct thickness measurements has never been systematically exploited. Here, this record is combined with remotely-sensed information on past ice thickness mapped from glacier retreat. Both datasets are incorporated in a state-of-the-art, mass-conservation approach to produce a well-informed map of the basal topography beneath the icefields. Its major asset is the reliability increase of thicknesses values along the many marine- and lake-terminating glaciers. For these, frontal ice-discharge is notably lower than previously reported. This finding implies that direct climatic control was more influential for past ice loss. We redact a total volume for both icefields in 2000 of 5351 km3. Despite the wealth of observations used in this assessment, relative volume uncertainties remain elevated.
Link with Projects:
948290
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