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Glacier changes in the circumpolar Arctic and sub-Arctic, mid-1980s to late-2000s/2011
Indexado
WoS WOS:000354042500004
Scopus SCOPUS_ID:84929658722
DOI 10.1080/00167223.2015.1026917
Año 2015
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



A new inventory record of satellite-derived area, length, elevation range and surface slope changes from the mid-1980s to late 2000s/2011 for 317 land-terminating glaciers and ice caps (GIC) is presented. The investigated GIC are located in 12 geographic regions throughout the circumpolar Arctic and sub-Arctic. This geographic subdivision allows us to examine regional variations in recent glacier changes. The method is based on a semi-automated classification approach which extracts GIC extent from satellite scenes. Most of the observed GIC show a reduction in area, length, elevation range and slope. On regional scale, the observed GIC changed in area between -4 +/- 3% (Nuuk, West Greenland; 1987-2003) and -40 +/- 4% (Talkeetna, southern Alaska; 1987-2011), equal to shrinking rates between -0.2% yr(-1) and -1.7% yr(-1). The regional change in length was between -36 +/- 13 m (southern British Columbia; 1985-2011) and -481 +/- 85 m (southern Ellesmere Island; 1988-2009), equal to -1 +/- 0.5 m yr(-1) and -23 +/- 4 m yr(-1). Regional GIC changes can be illustrated by power-law scaling relationships between GIC area and length, elevation range, and surface slope. Here, we find regional variability in scaling parameters in both time and space, which should be considered when estimating global assessments of GIC conditions and changes over time.

Revista



Revista ISSN
Geografisk Tidsskrift 0016-7223

Métricas Externas



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Disciplinas de Investigación



WOS
Geography
Environmental Studies
Scopus
Geography, Planning And Development
Earth And Planetary Sciences (All)
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Mernild, Sebastian H. Hombre Ctr Sci Studies - Chile
Los Alamos Natl Lab - Estados Unidos
Centro de Estudios Científicos - Chile
Los Alamos National Laboratory - Estados Unidos
2 Malmros, Jeppe K. Hombre Ctr Sci Studies - Chile
Univ Copenhagen - Dinamarca
Centro de Estudios Científicos - Chile
Københavns Universitet - Dinamarca
3 Yde, Jacob C. Hombre Sogn & Fjordane Univ Coll - Noruega
Western Norway University of Applied Sciences - Noruega
4 De Villiers, Simon Hombre Sogn & Fjordane Univ Coll - Noruega
Western Norway University of Applied Sciences - Noruega
5 Knudsen, N. Tvis Hombre Aarhus Univ - Dinamarca
Aarhus Universitet - Dinamarca
6 Wilson, Ryan Hombre Ctr Sci Studies - Chile
Centro de Estudios Científicos - Chile

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Financiamiento



Fuente
European Community
U.S. Department of Energy
Seventh Framework Programme
Office of Science
National Nuclear Security Administration
Los Alamos National Laboratory
National Nuclear Security Administration of the U.S. Department of Energy
Los Alamos National Laboratory (LANL)
Earth System Modelling program within the U.S. Department of Energy's Office of Science

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
We extend a very special thanks to the anonymous reviewers for their insightful critique of this article. This work was supported partly by the Earth System Modelling program within the U.S. Department of Energy's Office of Science, by Los Alamos National Laboratory (LANL), and by the European Community's Seventh Framework Programme under grant agreement No. 262693. LANL is operated under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy under Contract No. DE-AC52-06NA25396). All satellite data were acquired through the USGS Earth Explorer internet portal (http://earthexplorer.usgs.gov/).
We extend a very special thanks to the anonymous reviewers for their insightful critique of this article. This work was supported partly by the Earth System Modelling program within the U.S. Department of Energy’s Office of Science, by Los Alamos National Laboratory (LANL), and by the European Community’s Seventh Framework Programme under grant agreement No. 262693. LANL is operated under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy under Contract No. DE-AC52-06NA25396). All satellite data were acquired through the USGS Earth Explorer internet portal (http://earthexplorer.usgs.gov/).

Muestra la fuente de financiamiento declarada en la publicación.