A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes
Using an ensemble of close- and long-range remote sensing, lake bathymetry and regional meteorological data, we present a detailed assessment of the geometric changes of El Morado Glacier in the Central Andes of Chile and its adjacent proglacial lake between 1932 and 2019. Overall, the results revea...
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2020
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ftleedsuniv:oai:eprints.whiterose.ac.uk:164728 2023-05-15T16:57:38+02:00 A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes Farías-Barahona, D Wilson, R Bravo, C Vivero, S Caro, A Shaw, TE Casassa, G Ayala, Á Mejías, A Harrison, S Glasser, NF McPhee, J Wündrich, O Braun, MH 2020-08-18 text https://eprints.whiterose.ac.uk/164728/ https://eprints.whiterose.ac.uk/164728/1/near_90year_record_of_the_evolution_of_el_morado_glacier_and_its_proglacial_lake_central_chilean_andes.pdf en eng Cambridge University Press https://eprints.whiterose.ac.uk/164728/1/near_90year_record_of_the_evolution_of_el_morado_glacier_and_its_proglacial_lake_central_chilean_andes.pdf Farías-Barahona, D, Wilson, R, Bravo, C orcid.org/0000-0003-4822-4786 et al. (11 more authors) (2020) A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes. Journal of Glaciology. ISSN 0022-1430 cc_by_4 CC-BY Article NonPeerReviewed 2020 ftleedsuniv 2023-01-30T22:32:18Z Using an ensemble of close- and long-range remote sensing, lake bathymetry and regional meteorological data, we present a detailed assessment of the geometric changes of El Morado Glacier in the Central Andes of Chile and its adjacent proglacial lake between 1932 and 2019. Overall, the results revealed a period of marked glacier down wasting, with a mean geodetic glacier mass balance of −0.39 ± 0.15 m w.e.a−1 observed for the entire glacier between 1955 and 2015 with an area loss of 40% between 1955 and 2019. We estimate an ice elevation change of −1.00 ± 0.17 m a−1 for the glacier tongue between 1932 and 2019. The increase in the ice thinning rates and area loss during the last decade is coincident with the severe drought in this region (2010–present), which our minimal surface mass-balance model is able to reproduce. As a result of the glacier changes observed, the proglacial lake increased in area substantially between 1955 and 2019, with bathymetry data suggesting a water volume of 3.6 million m3 in 2017. This study highlights the need for further monitoring of glacierised areas in the Central Andes. Such efforts would facilitate a better understanding of the downstream impacts of glacier downwasting. Article in Journal/Newspaper Journal of Glaciology White Rose Research Online (Universities of Leeds, Sheffield & York) Geodetic Glacier ENVELOPE(163.800,163.800,-77.750,-77.750) |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
Using an ensemble of close- and long-range remote sensing, lake bathymetry and regional meteorological data, we present a detailed assessment of the geometric changes of El Morado Glacier in the Central Andes of Chile and its adjacent proglacial lake between 1932 and 2019. Overall, the results revealed a period of marked glacier down wasting, with a mean geodetic glacier mass balance of −0.39 ± 0.15 m w.e.a−1 observed for the entire glacier between 1955 and 2015 with an area loss of 40% between 1955 and 2019. We estimate an ice elevation change of −1.00 ± 0.17 m a−1 for the glacier tongue between 1932 and 2019. The increase in the ice thinning rates and area loss during the last decade is coincident with the severe drought in this region (2010–present), which our minimal surface mass-balance model is able to reproduce. As a result of the glacier changes observed, the proglacial lake increased in area substantially between 1955 and 2019, with bathymetry data suggesting a water volume of 3.6 million m3 in 2017. This study highlights the need for further monitoring of glacierised areas in the Central Andes. Such efforts would facilitate a better understanding of the downstream impacts of glacier downwasting. |
format |
Article in Journal/Newspaper |
author |
Farías-Barahona, D Wilson, R Bravo, C Vivero, S Caro, A Shaw, TE Casassa, G Ayala, Á Mejías, A Harrison, S Glasser, NF McPhee, J Wündrich, O Braun, MH |
spellingShingle |
Farías-Barahona, D Wilson, R Bravo, C Vivero, S Caro, A Shaw, TE Casassa, G Ayala, Á Mejías, A Harrison, S Glasser, NF McPhee, J Wündrich, O Braun, MH A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
author_facet |
Farías-Barahona, D Wilson, R Bravo, C Vivero, S Caro, A Shaw, TE Casassa, G Ayala, Á Mejías, A Harrison, S Glasser, NF McPhee, J Wündrich, O Braun, MH |
author_sort |
Farías-Barahona, D |
title |
A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
title_short |
A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
title_full |
A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
title_fullStr |
A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
title_full_unstemmed |
A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes |
title_sort |
near 90-year record of the evolution of el morado glacier and its proglacial lake, central chilean andes |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://eprints.whiterose.ac.uk/164728/ https://eprints.whiterose.ac.uk/164728/1/near_90year_record_of_the_evolution_of_el_morado_glacier_and_its_proglacial_lake_central_chilean_andes.pdf |
long_lat |
ENVELOPE(163.800,163.800,-77.750,-77.750) |
geographic |
Geodetic Glacier |
geographic_facet |
Geodetic Glacier |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
https://eprints.whiterose.ac.uk/164728/1/near_90year_record_of_the_evolution_of_el_morado_glacier_and_its_proglacial_lake_central_chilean_andes.pdf Farías-Barahona, D, Wilson, R, Bravo, C orcid.org/0000-0003-4822-4786 et al. (11 more authors) (2020) A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes. Journal of Glaciology. ISSN 0022-1430 |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766049194566483968 |