Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes
Glaciers in the northern Patagonian Andes (35–46° S) have shown a dramatic decline in area in the last decades. However, little is known about glacier mass balance changes in this region. This study presents a geodetic mass balance estimate of Monte Tronador (41.15° S; 71.88° W) glaciers by comparin...
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010638 2023-05-15T18:32:32+02:00 Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes Ruiz, Lucas Berthier, Etienne Viale, Maximiliano Pitte, Pierre Masiokas, Mariano H. 2017-02 electronic https://doi.org/10.5194/tc-11-619-2017 https://noa.gwlb.de/receive/cop_mods_00010638 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010595/tc-11-619-2017.pdf https://tc.copernicus.org/articles/11/619/2017/tc-11-619-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-619-2017 https://noa.gwlb.de/receive/cop_mods_00010638 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010595/tc-11-619-2017.pdf https://tc.copernicus.org/articles/11/619/2017/tc-11-619-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-619-2017 2022-02-08T22:56:57Z Glaciers in the northern Patagonian Andes (35–46° S) have shown a dramatic decline in area in the last decades. However, little is known about glacier mass balance changes in this region. This study presents a geodetic mass balance estimate of Monte Tronador (41.15° S; 71.88° W) glaciers by comparing a Pléiades digital elevation model (DEM) acquired in 2012 with the Shuttle Radar Topography Mission (SRTM) X-band DEM acquired in 2000. We find a slightly negative Monte-Tronador-wide mass budget of −0.17 m w.e. a−1 (ranging from −0.54 to 0.14 m w.e. a−1 for individual glaciers) and a slightly negative trend in glacier extent (−0.16 % a−1) over the 2000–2012 period. With a few exceptions, debris-covered valley glaciers that descend below a bedrock cliff are losing mass at higher rates, while mountain glaciers with termini located above this cliff are closer to mass equilibrium. Climate variations over the last decades show a notable increase in warm season temperatures in the late 1970s but limited warming afterwards. These warmer conditions combined with an overall drying trend may explain the moderate ice mass loss observed at Monte Tronador. The almost balanced mass budget of mountain glaciers suggests that they are probably approaching a dynamic equilibrium with current (post-1977) climate, whereas the valley glaciers tongues will continue to retreat. The slightly negative overall mass budget of Monte Tronador glaciers contrasts with the highly negative mass balance estimates observed in the Patagonian ice fields further south. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA Tronador ENVELOPE(-62.917,-62.917,-64.317,-64.317) The Cryosphere 11 1 619 634 |
institution |
Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Ruiz, Lucas Berthier, Etienne Viale, Maximiliano Pitte, Pierre Masiokas, Mariano H. Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
topic_facet |
article Verlagsveröffentlichung |
description |
Glaciers in the northern Patagonian Andes (35–46° S) have shown a dramatic decline in area in the last decades. However, little is known about glacier mass balance changes in this region. This study presents a geodetic mass balance estimate of Monte Tronador (41.15° S; 71.88° W) glaciers by comparing a Pléiades digital elevation model (DEM) acquired in 2012 with the Shuttle Radar Topography Mission (SRTM) X-band DEM acquired in 2000. We find a slightly negative Monte-Tronador-wide mass budget of −0.17 m w.e. a−1 (ranging from −0.54 to 0.14 m w.e. a−1 for individual glaciers) and a slightly negative trend in glacier extent (−0.16 % a−1) over the 2000–2012 period. With a few exceptions, debris-covered valley glaciers that descend below a bedrock cliff are losing mass at higher rates, while mountain glaciers with termini located above this cliff are closer to mass equilibrium. Climate variations over the last decades show a notable increase in warm season temperatures in the late 1970s but limited warming afterwards. These warmer conditions combined with an overall drying trend may explain the moderate ice mass loss observed at Monte Tronador. The almost balanced mass budget of mountain glaciers suggests that they are probably approaching a dynamic equilibrium with current (post-1977) climate, whereas the valley glaciers tongues will continue to retreat. The slightly negative overall mass budget of Monte Tronador glaciers contrasts with the highly negative mass balance estimates observed in the Patagonian ice fields further south. |
format |
Article in Journal/Newspaper |
author |
Ruiz, Lucas Berthier, Etienne Viale, Maximiliano Pitte, Pierre Masiokas, Mariano H. |
author_facet |
Ruiz, Lucas Berthier, Etienne Viale, Maximiliano Pitte, Pierre Masiokas, Mariano H. |
author_sort |
Ruiz, Lucas |
title |
Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
title_short |
Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
title_full |
Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
title_fullStr |
Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
title_full_unstemmed |
Recent geodetic mass balance of Monte Tronador glaciers, northern Patagonian Andes |
title_sort |
recent geodetic mass balance of monte tronador glaciers, northern patagonian andes |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-619-2017 https://noa.gwlb.de/receive/cop_mods_00010638 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010595/tc-11-619-2017.pdf https://tc.copernicus.org/articles/11/619/2017/tc-11-619-2017.pdf |
long_lat |
ENVELOPE(-62.917,-62.917,-64.317,-64.317) |
geographic |
Tronador |
geographic_facet |
Tronador |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-619-2017 https://noa.gwlb.de/receive/cop_mods_00010638 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010595/tc-11-619-2017.pdf https://tc.copernicus.org/articles/11/619/2017/tc-11-619-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-619-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
1 |
container_start_page |
619 |
op_container_end_page |
634 |
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1766216649153708032 |