Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)

289 p.

Detalles Bibliográficos
Autor: Izagirre Estibaritz, Eñaut
Tipo de recurso: tesis doctoral
Fecha de publicación:2025
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/78514
Acceso en línea:http://hdl.handle.net/10810/78514
Access Level:acceso abierto
Palabra clave:cartografía geográfica
geografía física
geomorfología
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spelling Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)Izagirre Estibaritz, Eñautcartografía geográficageografía físicageomorfología289 p.EXTRACTO/RESUMEN (euskara, castellano o inglés)This PhD dissertation investigates the evolution and interactions of glaciers and glaciallakes in the Cordillera Darwin and Cloue Icefields of Tierra del Fuego, the southernmosttip of the South American Andes. Located in a climatically sensitive region stronglyinfluenced by the westerly winds of the Southern Hemisphere, these temperateicefields offer a unique opportunity to study the effects of climate change on glacierdynamics, glacier-lake interactions and related processes. By combining highresolutionremote sensing, aerial photogrammetry, field observations and stableisotope analyses, the research reconstructs the recent glaciological history of the regionand reveals the mechanisms driving current cryospheric change.The study begins with a comprehensive glacial geomorphological mapping effortcovering an area of more than 13,000 km2, identifying more than 11,500 landforms.These features, including trimlines, moraines and glacial lake basins, serve as indicators of glacial fluctuations during the Holocene and demonstrate the glacial heritage of theregion. This mapping forms the basis for analysing landscape evolution and thetransition from glacier-dominated terrain to lake-dominated foreland.Multi-temporal satellite images and historical aerial photographs are used to quantifythe distribution and extent of glacial lakes since the mid-20th century. The researchdocuments a clear shift from predominantly ice-dammed to moraine-dammed lakesand shows how glacier retreat has changed the regional hydrology. Newly identifiedglacial lake outburst floods (GLOFs), including the southernmost recorded events inSouth America, demonstrate the cascading nature of lake drainage events and theirdiverse mechanisms.A detailed case study of the Glaciar Roncagli system illustrates how glacier mass lossand frontal retreat contribute to the weakening of ice dams and the occurrence ofalmost annual outflow events from ice-dammed lakes such as Lago Mateo Martinic. Thisexample emphasises the dynamic feedbacks between lake expansion, glacier instabilityand abrupt hydrological dynamics, and provides insights into the physical processescontrolling cyclic outflows.To better constrain the climatic drivers of these changes, the project explores thesnowpack and accumulation processes in the little-studied upper parts of the CordilleraDarwin Icefield. Field data from snowpits and measurements of stable water isotopesprovide important information on snowfall patterns and post-deposition processes, andcomplement the recent firn core records.By integrating geomorphology, glaciology and climate science, this work provides newinsights into the physical and climatic processes that characterise one of the mostremote and rapidly changing cryospheric regions on Earth. It makes a valuablecontribution to understanding the future of temperate icefields in the face of ongoingclimate changeAntigüedad Auzmendi, IgnacioFaria, Sergio Henrique2026202620252025info:eu-repo/semantics/doctoralThesisapplication/pdfhttp://hdl.handle.net/10810/78514reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/es/(cc) 2025 Eñaut Izagirre Estibaritz (cc by-nc-sa 4.0)Atribución-NoComercial-CompartirIgual 3.0 Españaoai:addi.ehu.eus:10810/785142026-06-18T09:23:17Z
dc.title.none.fl_str_mv Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
title Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
spellingShingle Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
Izagirre Estibaritz, Eñaut
cartografía geográfica
geografía física
geomorfología
title_short Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
title_full Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
title_fullStr Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
title_full_unstemmed Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
title_sort Evolution of glaciers and glacial lakes in response to climatechange in the Cordillera Darwin and Cloue Icefields (Tierra del Fuego, southernmostSouth America)
dc.creator.none.fl_str_mv Izagirre Estibaritz, Eñaut
author Izagirre Estibaritz, Eñaut
author_facet Izagirre Estibaritz, Eñaut
author_role author
dc.contributor.none.fl_str_mv Antigüedad Auzmendi, Ignacio
Faria, Sergio Henrique
dc.subject.none.fl_str_mv cartografía geográfica
geografía física
geomorfología
topic cartografía geográfica
geografía física
geomorfología
description 289 p.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/78514
url http://hdl.handle.net/10810/78514
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
(cc) 2025 Eñaut Izagirre Estibaritz (cc by-nc-sa 4.0)
Atribución-NoComercial-CompartirIgual 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/3.0/es/
(cc) 2025 Eñaut Izagirre Estibaritz (cc by-nc-sa 4.0)
Atribución-NoComercial-CompartirIgual 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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