21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery
Alaskan glaciers are among the largest regional contributors to sea-level rise in the latter half of the 20th century. Earlier studies have documented extensive and accelerated ice wastage in most regions of Alaska. Here we study five decades of mass loss on high-elevation, land-terminating glaciers...
Published in: | Journal of Glaciology |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351/document https://hal.archives-ouvertes.fr/hal-01011351/file/s8.pdf https://doi.org/10.3189/2014JoG13J119 |
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ftccsdartic:oai:HAL:hal-01011351v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
GLACIER MASS BALANCE ICE AND CLIMATE [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
GLACIER MASS BALANCE ICE AND CLIMATE [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Das, I. Hock, R. Berthier, E. Lingle, C. S. 21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
topic_facet |
GLACIER MASS BALANCE ICE AND CLIMATE [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
Alaskan glaciers are among the largest regional contributors to sea-level rise in the latter half of the 20th century. Earlier studies have documented extensive and accelerated ice wastage in most regions of Alaska. Here we study five decades of mass loss on high-elevation, land-terminating glaciers of the Wrangell Mountains (∼4900 km2) in central Alaska based on airborne center-line laser altimetry data from 2000 and 2007, a digital elevation model (DEM) from ASTER and SPOT5, and US Geological Survey topographic maps from 1957. The regional mass-balance estimates derived from center-line laser altimetry profiles using two regional extrapolation techniques agree well with that from DEM differencing. Repeat altimetry measurements reveal accelerated mass loss over the Wrangell Mountains, with the regional mass-balance rate evolving from -0.07±0.19 m w.e.a-1 during 1957-2000 to -0.24±0.16 m w.e.a-1 during 2000-07. Nabesna, the largest glacier in this region (∼1056 km2), lost mass four times faster during 2000-07 than during 1957-2000. Although accelerated, the mass change over this region is slower than in other glacierized regions of Alaska, particularly those with tidewater glaciers. Together, our laser altimetry and satellite DEM analyses demonstrate increased wastage of these glaciers during the last 50 years. |
author2 |
Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Department of Earth Sciences Uppsala Uppsala University Cryosphère satelittaire (CRYO) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Das, I. Hock, R. Berthier, E. Lingle, C. S. |
author_facet |
Das, I. Hock, R. Berthier, E. Lingle, C. S. |
author_sort |
Das, I. |
title |
21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
title_short |
21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
title_full |
21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
title_fullStr |
21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
title_full_unstemmed |
21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery |
title_sort |
21st-century increase in glacier mass loss in the wrangell mountains, alaska, usa, from airborne laser altimetry and satellite stereo-imagery |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351/document https://hal.archives-ouvertes.fr/hal-01011351/file/s8.pdf https://doi.org/10.3189/2014JoG13J119 |
genre |
glacier glaciers Journal of Glaciology Tidewater Alaska |
genre_facet |
glacier glaciers Journal of Glaciology Tidewater Alaska |
op_source |
ISSN: 0022-1430 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-01011351 Journal of Glaciology, International Glaciological Society, 2014, 60 (220), pp.283-293. ⟨10.3189/2014JoG13J119⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/2014JoG13J119 hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351/document https://hal.archives-ouvertes.fr/hal-01011351/file/s8.pdf doi:10.3189/2014JoG13J119 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3189/2014JoG13J119 |
container_title |
Journal of Glaciology |
container_volume |
60 |
container_issue |
220 |
container_start_page |
283 |
op_container_end_page |
293 |
_version_ |
1766008298381770752 |
spelling |
ftccsdartic:oai:HAL:hal-01011351v1 2023-05-15T16:20:23+02:00 21st-century increase in glacier mass loss in the Wrangell Mountains, Alaska, USA, from airborne laser altimetry and satellite stereo-imagery Das, I. Hock, R. Berthier, E. Lingle, C. S. Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Department of Earth Sciences Uppsala Uppsala University Cryosphère satelittaire (CRYO) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.archives-ouvertes.fr/hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351/document https://hal.archives-ouvertes.fr/hal-01011351/file/s8.pdf https://doi.org/10.3189/2014JoG13J119 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/2014JoG13J119 hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351 https://hal.archives-ouvertes.fr/hal-01011351/document https://hal.archives-ouvertes.fr/hal-01011351/file/s8.pdf doi:10.3189/2014JoG13J119 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-01011351 Journal of Glaciology, International Glaciological Society, 2014, 60 (220), pp.283-293. ⟨10.3189/2014JoG13J119⟩ GLACIER MASS BALANCE ICE AND CLIMATE [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.3189/2014JoG13J119 2021-10-24T13:17:21Z Alaskan glaciers are among the largest regional contributors to sea-level rise in the latter half of the 20th century. Earlier studies have documented extensive and accelerated ice wastage in most regions of Alaska. Here we study five decades of mass loss on high-elevation, land-terminating glaciers of the Wrangell Mountains (∼4900 km2) in central Alaska based on airborne center-line laser altimetry data from 2000 and 2007, a digital elevation model (DEM) from ASTER and SPOT5, and US Geological Survey topographic maps from 1957. The regional mass-balance estimates derived from center-line laser altimetry profiles using two regional extrapolation techniques agree well with that from DEM differencing. Repeat altimetry measurements reveal accelerated mass loss over the Wrangell Mountains, with the regional mass-balance rate evolving from -0.07±0.19 m w.e.a-1 during 1957-2000 to -0.24±0.16 m w.e.a-1 during 2000-07. Nabesna, the largest glacier in this region (∼1056 km2), lost mass four times faster during 2000-07 than during 1957-2000. Although accelerated, the mass change over this region is slower than in other glacierized regions of Alaska, particularly those with tidewater glaciers. Together, our laser altimetry and satellite DEM analyses demonstrate increased wastage of these glaciers during the last 50 years. Article in Journal/Newspaper glacier glaciers Journal of Glaciology Tidewater Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Glaciology 60 220 283 293 |