Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems
Volc´an Villarrica (39◦25 12 S, 71◦56 27 W; 2847ma.s.l.) is an active ice-capped volcano located in the Chilean lake district. The surface energy balance and glacier frontal variations have been monitored for several years, using automatic weather stations and satellite imagery. In recent field camp...
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ftunivchile:oai:repositorio.uchile.cl:2250/117816 2023-05-15T16:57:25+02:00 Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems Corripio, Javier G. Brock, Ben Clavero Ribes, Jorge Wendt, Jens Rivera Ibáñez, Sergio 2008 application/pdf https://repositorio.uchile.cl/handle/2250/117816 en eng INT GLACIOL SOC. JOURNAL OF GLACIOLOGY, Volume: 54, Issue: 188, Pages: 920-930, 2008 0022-1430 https://repositorio.uchile.cl/handle/2250/117816 TEMPERATE GLACIERS Artículo de revista 2008 ftunivchile 2023-01-29T00:51:22Z Volc´an Villarrica (39◦25 12 S, 71◦56 27 W; 2847ma.s.l.) is an active ice-capped volcano located in the Chilean lake district. The surface energy balance and glacier frontal variations have been monitored for several years, using automatic weather stations and satellite imagery. In recent field campaigns, surface topography was measured using Javad GPS receivers. Daily changes in snow-, iceand tephra-covered areas were recorded using an automatic digital camera installed on a rock outcrop. In spite of frequently damaging weather conditions, two series of consecutive images were obtained, in 2006 and 2007. These photographs were georeferenced to a resampled 90m pixel size SRTM digital elevation model and the reflectance values normalized according to several geometric and atmospheric parameters. The resulting daily maps of surface albedo are used as input to a distributed glacier-melt model during a 12 day mid-summer period. The spatial pattern of cumulative melt is complex and controlled by the distribution of airfall and wind-blown tephra, with extremely high melt rates occurring downwind of the crater and exposed ash banks. The camera images are also used to visualize the pattern of glacier crevassing. The results demonstrate the value of terrestrial photography in understanding the energy and mass balance of the glacier, including the generation of meltwater, and the potential value of the technique for monitoring volcanic activity and potential hazards associated with ice–volcano interactions during eruptive activity. This work was sponsored by Fondo Nacional de Ciencia y Tecnolog´ıa, Chile, (FONDECYT 1040515 and 7050177) and Centro de Estudios Cient´ıficos (CECS), Chile. The paper was written while one of the authors (J.G.C.) was funded by a grant from the Austrian Science Foundation (FWF project No. M952-N10). Article in Journal/Newspaper Journal of Glaciology Universidad de Chile: Repositorio académico |
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Open Polar |
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Universidad de Chile: Repositorio académico |
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ftunivchile |
language |
English |
topic |
TEMPERATE GLACIERS |
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TEMPERATE GLACIERS Corripio, Javier G. Brock, Ben Clavero Ribes, Jorge Wendt, Jens Rivera Ibáñez, Sergio Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
topic_facet |
TEMPERATE GLACIERS |
description |
Volc´an Villarrica (39◦25 12 S, 71◦56 27 W; 2847ma.s.l.) is an active ice-capped volcano located in the Chilean lake district. The surface energy balance and glacier frontal variations have been monitored for several years, using automatic weather stations and satellite imagery. In recent field campaigns, surface topography was measured using Javad GPS receivers. Daily changes in snow-, iceand tephra-covered areas were recorded using an automatic digital camera installed on a rock outcrop. In spite of frequently damaging weather conditions, two series of consecutive images were obtained, in 2006 and 2007. These photographs were georeferenced to a resampled 90m pixel size SRTM digital elevation model and the reflectance values normalized according to several geometric and atmospheric parameters. The resulting daily maps of surface albedo are used as input to a distributed glacier-melt model during a 12 day mid-summer period. The spatial pattern of cumulative melt is complex and controlled by the distribution of airfall and wind-blown tephra, with extremely high melt rates occurring downwind of the crater and exposed ash banks. The camera images are also used to visualize the pattern of glacier crevassing. The results demonstrate the value of terrestrial photography in understanding the energy and mass balance of the glacier, including the generation of meltwater, and the potential value of the technique for monitoring volcanic activity and potential hazards associated with ice–volcano interactions during eruptive activity. This work was sponsored by Fondo Nacional de Ciencia y Tecnolog´ıa, Chile, (FONDECYT 1040515 and 7050177) and Centro de Estudios Cient´ıficos (CECS), Chile. The paper was written while one of the authors (J.G.C.) was funded by a grant from the Austrian Science Foundation (FWF project No. M952-N10). |
format |
Article in Journal/Newspaper |
author |
Corripio, Javier G. Brock, Ben Clavero Ribes, Jorge Wendt, Jens Rivera Ibáñez, Sergio |
author_facet |
Corripio, Javier G. Brock, Ben Clavero Ribes, Jorge Wendt, Jens Rivera Ibáñez, Sergio |
author_sort |
Corripio, Javier G. |
title |
Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
title_short |
Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
title_full |
Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
title_fullStr |
Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
title_full_unstemmed |
Monitoring ice-capped active Volcan Villarrica, southern Chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
title_sort |
monitoring ice-capped active volcan villarrica, southern chile, using terrestrial photography combined with automatic weather stations and global positioning systems |
publisher |
INT GLACIOL SOC. |
publishDate |
2008 |
url |
https://repositorio.uchile.cl/handle/2250/117816 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
JOURNAL OF GLACIOLOGY, Volume: 54, Issue: 188, Pages: 920-930, 2008 0022-1430 https://repositorio.uchile.cl/handle/2250/117816 |
_version_ |
1766048968770322432 |