Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery
ABSTRACT Glaciers on active volcanoes are subject to changes in both climate fluctuations and volcanic activity. Whereas many studies analysed changes on individual volcanoes, this study presents for the first time a comparison of glacier changes on active volcanoes on a continental scale. Glacier a...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/jog.2019.30 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000303 |
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crcambridgeupr:10.1017/jog.2019.30 2024-09-15T18:15:39+00:00 Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery REINTHALER, JOHANNES PAUL, FRANK GRANADOS, HUGO DELGADO RIVERA, ANDRÉS HUGGEL, CHRISTIAN 2019 http://dx.doi.org/10.1017/jog.2019.30 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000303 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 65, issue 252, page 542-556 ISSN 0022-1430 1727-5652 journal-article 2019 crcambridgeupr https://doi.org/10.1017/jog.2019.30 2024-07-31T04:03:29Z ABSTRACT Glaciers on active volcanoes are subject to changes in both climate fluctuations and volcanic activity. Whereas many studies analysed changes on individual volcanoes, this study presents for the first time a comparison of glacier changes on active volcanoes on a continental scale. Glacier areas were mapped for 59 volcanoes across Latin America around 1986, 1999 and 2015 using a semi-automated band ratio method combined with manual editing using satellite images from Landsat 4/5/7/8 and Sentinel-2. Area changes were compared with the Smithsonian volcano database to analyse possible glacier–volcano interactions. Over the full period, the mapped area changed from 1399.3 ± 80 km 2 to 1016.1 ± 34 km 2 (−383.2 km 2 ) or −27.4% (−0.92% a −1 ) in relative terms. Small glaciers, especially in tropical regions lost more of their area compared to large and extra–tropical glaciers. Interestingly, 46 out of 59 analysed glaciers (78%) showed a decelerating shrinkage rate in the second period (−1.20% a −1 before 1999 and −0.70% a −1 after 1999). We found a slightly higher (but statistically not significant) area loss rate (−1.03% a −1 ) for glaciers on volcanoes with eruptions than without (−0.86% a −1 ). Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 65 252 542 556 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
ABSTRACT Glaciers on active volcanoes are subject to changes in both climate fluctuations and volcanic activity. Whereas many studies analysed changes on individual volcanoes, this study presents for the first time a comparison of glacier changes on active volcanoes on a continental scale. Glacier areas were mapped for 59 volcanoes across Latin America around 1986, 1999 and 2015 using a semi-automated band ratio method combined with manual editing using satellite images from Landsat 4/5/7/8 and Sentinel-2. Area changes were compared with the Smithsonian volcano database to analyse possible glacier–volcano interactions. Over the full period, the mapped area changed from 1399.3 ± 80 km 2 to 1016.1 ± 34 km 2 (−383.2 km 2 ) or −27.4% (−0.92% a −1 ) in relative terms. Small glaciers, especially in tropical regions lost more of their area compared to large and extra–tropical glaciers. Interestingly, 46 out of 59 analysed glaciers (78%) showed a decelerating shrinkage rate in the second period (−1.20% a −1 before 1999 and −0.70% a −1 after 1999). We found a slightly higher (but statistically not significant) area loss rate (−1.03% a −1 ) for glaciers on volcanoes with eruptions than without (−0.86% a −1 ). |
format |
Article in Journal/Newspaper |
author |
REINTHALER, JOHANNES PAUL, FRANK GRANADOS, HUGO DELGADO RIVERA, ANDRÉS HUGGEL, CHRISTIAN |
spellingShingle |
REINTHALER, JOHANNES PAUL, FRANK GRANADOS, HUGO DELGADO RIVERA, ANDRÉS HUGGEL, CHRISTIAN Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
author_facet |
REINTHALER, JOHANNES PAUL, FRANK GRANADOS, HUGO DELGADO RIVERA, ANDRÉS HUGGEL, CHRISTIAN |
author_sort |
REINTHALER, JOHANNES |
title |
Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
title_short |
Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
title_full |
Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
title_fullStr |
Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
title_full_unstemmed |
Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery |
title_sort |
area changes of glaciers on active volcanoes in latin america between 1986 and 2015 observed from multi-temporal satellite imagery |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/jog.2019.30 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000303 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 65, issue 252, page 542-556 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2019.30 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
252 |
container_start_page |
542 |
op_container_end_page |
556 |
_version_ |
1810453588878557184 |