Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods
This study examines hazardous processes and events originating from glacier and permafrost areas in the extratropical Andes (Andes of Chile and Argentina) in order to document their frequency, magnitude, dynamics and their geomorphic and societal impacts. Ice-avalanches and rock-falls from permafros...
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ftvictoriauwfig:oai:figshare.com:article/17018849 2023-05-15T16:37:14+02:00 Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods Iribarren Anacona, Pablo 2016-01-01T00:00:00Z https://doi.org/10.26686/wgtn.17018849.v1 https://figshare.com/articles/thesis/Hazardous_geomorphic_processes_in_the_extratropical_Andes_with_a_focus_on_glacial_lake_outburst_floods/17018849 unknown doi:10.26686/wgtn.17018849.v1 https://figshare.com/articles/thesis/Hazardous_geomorphic_processes_in_the_extratropical_Andes_with_a_focus_on_glacial_lake_outburst_floods/17018849 Author Retains Copyright Geomorphology and Regolith and Landscape Evolution Glaciology Natural Hazards Geomorphic hazards GLOFs Glacial lake outburst floods Andes School: School of Geography Environment and Earth Sciences 040601 Geomorphology and Regolith and Landscape Evolution 040602 Glaciology 040604 Natural Hazards 970104 Expanding Knowledge in the Earth Sciences Degree Discipline: Physical Geography Degree Level: Doctoral Degree Name: Doctor of Philosophy Text Thesis 2016 ftvictoriauwfig https://doi.org/10.26686/wgtn.17018849.v1 2021-11-18T00:03:07Z This study examines hazardous processes and events originating from glacier and permafrost areas in the extratropical Andes (Andes of Chile and Argentina) in order to document their frequency, magnitude, dynamics and their geomorphic and societal impacts. Ice-avalanches and rock-falls from permafrost areas, lahars from ice-capped volcanoes and glacial lake outburst floods (GLOFs) have occurred in the extratropical Andes causing ~200 human deaths in the Twentieth Century. However, data about these events is scarce and has not been studied systematically. Thus, a better knowledge of glacier and permafrost hazards in the extratropical Andes is required to better prepare for threats emerging from a rapidly evolving cryosphere. I carried out a regional-scale review of hazardous processes and events originating in glacier and permafrost areas in the extratropical Andes. This review, developed by means of a bibliographic analysis and the interpretation of satellite images, shows that multi-phase mass movements involving glaciers and permafrost and lahars have caused damage to communities in the extratropical Andes. However, it is noted that GLOFs are one the most common and far reaching hazards and that GLOFs in this region include some of the most voluminous GLOFs in historical time on Earth. Furthermore, GLOF hazard is likely to increase in the future in response to glacier retreat and lake development. To gain insight into the dynamics of GLOFs I create a regional-scale inventory of glacier lakes and associated hazards in the Baker Basin, a 20500 km2 glaciated basin in the Chilean Patagonia. I also simulate and reconstruct moraine- and ice- dammed lake failures in the extratropical Andes using numerical and empirical models. More than 100 GLOFs have occurred in the extratropical Andes since the Eighteenth Century and at least 16 moraine-dammed lakes have produced GLOFs. In the extratropical Andes most of the failed moraine-dammed lakes were in contact with retreating glaciers and had moderate (> 8°) to steep ... Thesis Ice permafrost Open Access Victoria University of Wellington / Te Herenga Waka Patagonia Argentina Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) The Baker ENVELOPE(-54.765,-54.765,49.667,49.667) |
institution |
Open Polar |
collection |
Open Access Victoria University of Wellington / Te Herenga Waka |
op_collection_id |
ftvictoriauwfig |
language |
unknown |
topic |
Geomorphology and Regolith and Landscape Evolution Glaciology Natural Hazards Geomorphic hazards GLOFs Glacial lake outburst floods Andes School: School of Geography Environment and Earth Sciences 040601 Geomorphology and Regolith and Landscape Evolution 040602 Glaciology 040604 Natural Hazards 970104 Expanding Knowledge in the Earth Sciences Degree Discipline: Physical Geography Degree Level: Doctoral Degree Name: Doctor of Philosophy |
spellingShingle |
Geomorphology and Regolith and Landscape Evolution Glaciology Natural Hazards Geomorphic hazards GLOFs Glacial lake outburst floods Andes School: School of Geography Environment and Earth Sciences 040601 Geomorphology and Regolith and Landscape Evolution 040602 Glaciology 040604 Natural Hazards 970104 Expanding Knowledge in the Earth Sciences Degree Discipline: Physical Geography Degree Level: Doctoral Degree Name: Doctor of Philosophy Iribarren Anacona, Pablo Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
topic_facet |
Geomorphology and Regolith and Landscape Evolution Glaciology Natural Hazards Geomorphic hazards GLOFs Glacial lake outburst floods Andes School: School of Geography Environment and Earth Sciences 040601 Geomorphology and Regolith and Landscape Evolution 040602 Glaciology 040604 Natural Hazards 970104 Expanding Knowledge in the Earth Sciences Degree Discipline: Physical Geography Degree Level: Doctoral Degree Name: Doctor of Philosophy |
description |
This study examines hazardous processes and events originating from glacier and permafrost areas in the extratropical Andes (Andes of Chile and Argentina) in order to document their frequency, magnitude, dynamics and their geomorphic and societal impacts. Ice-avalanches and rock-falls from permafrost areas, lahars from ice-capped volcanoes and glacial lake outburst floods (GLOFs) have occurred in the extratropical Andes causing ~200 human deaths in the Twentieth Century. However, data about these events is scarce and has not been studied systematically. Thus, a better knowledge of glacier and permafrost hazards in the extratropical Andes is required to better prepare for threats emerging from a rapidly evolving cryosphere. I carried out a regional-scale review of hazardous processes and events originating in glacier and permafrost areas in the extratropical Andes. This review, developed by means of a bibliographic analysis and the interpretation of satellite images, shows that multi-phase mass movements involving glaciers and permafrost and lahars have caused damage to communities in the extratropical Andes. However, it is noted that GLOFs are one the most common and far reaching hazards and that GLOFs in this region include some of the most voluminous GLOFs in historical time on Earth. Furthermore, GLOF hazard is likely to increase in the future in response to glacier retreat and lake development. To gain insight into the dynamics of GLOFs I create a regional-scale inventory of glacier lakes and associated hazards in the Baker Basin, a 20500 km2 glaciated basin in the Chilean Patagonia. I also simulate and reconstruct moraine- and ice- dammed lake failures in the extratropical Andes using numerical and empirical models. More than 100 GLOFs have occurred in the extratropical Andes since the Eighteenth Century and at least 16 moraine-dammed lakes have produced GLOFs. In the extratropical Andes most of the failed moraine-dammed lakes were in contact with retreating glaciers and had moderate (> 8°) to steep ... |
format |
Thesis |
author |
Iribarren Anacona, Pablo |
author_facet |
Iribarren Anacona, Pablo |
author_sort |
Iribarren Anacona, Pablo |
title |
Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
title_short |
Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
title_full |
Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
title_fullStr |
Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
title_full_unstemmed |
Hazardous geomorphic processes in the extratropical Andes with a focus on glacial lake outburst floods |
title_sort |
hazardous geomorphic processes in the extratropical andes with a focus on glacial lake outburst floods |
publishDate |
2016 |
url |
https://doi.org/10.26686/wgtn.17018849.v1 https://figshare.com/articles/thesis/Hazardous_geomorphic_processes_in_the_extratropical_Andes_with_a_focus_on_glacial_lake_outburst_floods/17018849 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) ENVELOPE(-68.258,-68.258,68.496,68.496) ENVELOPE(-54.765,-54.765,49.667,49.667) |
geographic |
Patagonia Argentina Glacial Lake Dammed Lake The Baker |
geographic_facet |
Patagonia Argentina Glacial Lake Dammed Lake The Baker |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
doi:10.26686/wgtn.17018849.v1 https://figshare.com/articles/thesis/Hazardous_geomorphic_processes_in_the_extratropical_Andes_with_a_focus_on_glacial_lake_outburst_floods/17018849 |
op_rights |
Author Retains Copyright |
op_doi |
https://doi.org/10.26686/wgtn.17018849.v1 |
_version_ |
1766027526939869184 |