Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016
Glacier mass loss in Alaska has implications for global sea level rise, fresh water input into the Gulf of Alaska and terrestrial fresh water resources. We map all glaciers (>4000 km2) on the Kenai Peninsula, south central Alaska, for the years 1986, 1995, 2005 and 2016, using satellite images. C...
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Cambridge University Press
2020
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ftdoajarticles:oai:doaj.org/article:2a7e81458cbc431d9c5d3097c9a49a22 2023-05-15T16:20:16+02:00 Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 Ruitang Yang Regine Hock Shichang Kang Donghui Shangguan Wanqin Guo 2020-08-01T00:00:00Z https://doi.org/10.1017/jog.2020.32 https://doaj.org/article/2a7e81458cbc431d9c5d3097c9a49a22 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143020000325/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2020.32 0022-1430 1727-5652 https://doaj.org/article/2a7e81458cbc431d9c5d3097c9a49a22 Journal of Glaciology, Vol 66, Pp 603-617 (2020) Alaska climate change glacier Kenai Peninsula mass balance remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/jog.2020.32 2023-03-12T01:30:57Z Glacier mass loss in Alaska has implications for global sea level rise, fresh water input into the Gulf of Alaska and terrestrial fresh water resources. We map all glaciers (>4000 km2) on the Kenai Peninsula, south central Alaska, for the years 1986, 1995, 2005 and 2016, using satellite images. Changes in surface elevation and volume are determined by differencing a digital elevation model (DEM) derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer stereo images in 2005 from the Interferometric Synthetic Aperture Radar DEM of 2014. The glacier area shrunk by 543 ± 123 km2 (12 ± 3%) between 1986 and 2016. The region-wide mass-balance rate between 2005 and 2014 was −0.94 ± 0.12 m w.e. a−1 (−3.84 ± 0.50 Gt a−1), which is almost twice as negative than found for earlier periods in previous studies indicating an acceleration in glacier mass loss in this region. Area-averaged mass changes were most negative for lake-terminating glaciers (−1.37 ± 0.13 m w.e. a−1), followed by land-terminating glaciers (−1.02 ± 0.13 m w.e. a−1) and tidewater glaciers (−0.45 ± 0.14 m w.e. a−1). Unambiguous attribution of the observed acceleration in mass loss over the last decades is hampered by the scarcity of observational data, especially at high elevation, and by large interannual variability. Article in Journal/Newspaper glacier glaciers Journal of Glaciology Tidewater Alaska Directory of Open Access Journals: DOAJ Articles Gulf of Alaska Journal of Glaciology 66 258 603 617 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Alaska climate change glacier Kenai Peninsula mass balance remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Alaska climate change glacier Kenai Peninsula mass balance remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Ruitang Yang Regine Hock Shichang Kang Donghui Shangguan Wanqin Guo Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
topic_facet |
Alaska climate change glacier Kenai Peninsula mass balance remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Glacier mass loss in Alaska has implications for global sea level rise, fresh water input into the Gulf of Alaska and terrestrial fresh water resources. We map all glaciers (>4000 km2) on the Kenai Peninsula, south central Alaska, for the years 1986, 1995, 2005 and 2016, using satellite images. Changes in surface elevation and volume are determined by differencing a digital elevation model (DEM) derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer stereo images in 2005 from the Interferometric Synthetic Aperture Radar DEM of 2014. The glacier area shrunk by 543 ± 123 km2 (12 ± 3%) between 1986 and 2016. The region-wide mass-balance rate between 2005 and 2014 was −0.94 ± 0.12 m w.e. a−1 (−3.84 ± 0.50 Gt a−1), which is almost twice as negative than found for earlier periods in previous studies indicating an acceleration in glacier mass loss in this region. Area-averaged mass changes were most negative for lake-terminating glaciers (−1.37 ± 0.13 m w.e. a−1), followed by land-terminating glaciers (−1.02 ± 0.13 m w.e. a−1) and tidewater glaciers (−0.45 ± 0.14 m w.e. a−1). Unambiguous attribution of the observed acceleration in mass loss over the last decades is hampered by the scarcity of observational data, especially at high elevation, and by large interannual variability. |
format |
Article in Journal/Newspaper |
author |
Ruitang Yang Regine Hock Shichang Kang Donghui Shangguan Wanqin Guo |
author_facet |
Ruitang Yang Regine Hock Shichang Kang Donghui Shangguan Wanqin Guo |
author_sort |
Ruitang Yang |
title |
Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
title_short |
Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
title_full |
Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
title_fullStr |
Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
title_full_unstemmed |
Glacier mass and area changes on the Kenai Peninsula, Alaska, 1986–2016 |
title_sort |
glacier mass and area changes on the kenai peninsula, alaska, 1986–2016 |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/jog.2020.32 https://doaj.org/article/2a7e81458cbc431d9c5d3097c9a49a22 |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
glacier glaciers Journal of Glaciology Tidewater Alaska |
genre_facet |
glacier glaciers Journal of Glaciology Tidewater Alaska |
op_source |
Journal of Glaciology, Vol 66, Pp 603-617 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143020000325/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2020.32 0022-1430 1727-5652 https://doaj.org/article/2a7e81458cbc431d9c5d3097c9a49a22 |
op_doi |
https://doi.org/10.1017/jog.2020.32 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
258 |
container_start_page |
603 |
op_container_end_page |
617 |
_version_ |
1766008141798965248 |