Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021
Glacier change in Kenai Fjords National Park in southcentral Alaska affects local terrestrial, fresh water and marine ecosystems and will likely impact ecotourism. We used Landsat 4–8 imagery from 1984 through 2021 to manually map lower glacier ice margins for 19 maritime glaciers in Kenai Fjords Na...
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Cambridge University Press
2023
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Online Access: | https://doi.org/10.1017/jog.2022.55 https://doaj.org/article/88c3ae8b97164adabba77be379a16bfe |
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ftdoajarticles:oai:doaj.org/article:88c3ae8b97164adabba77be379a16bfe 2023-05-15T16:20:19+02:00 Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 Taryn Black Deborah Kurtz 2023-04-01T00:00:00Z https://doi.org/10.1017/jog.2022.55 https://doaj.org/article/88c3ae8b97164adabba77be379a16bfe EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022000557/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.55 0022-1430 1727-5652 https://doaj.org/article/88c3ae8b97164adabba77be379a16bfe Journal of Glaciology, Vol 69, Pp 251-265 (2023) Glacier mapping glacier monitoring mountain glaciers remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.55 2023-03-19T01:31:51Z Glacier change in Kenai Fjords National Park in southcentral Alaska affects local terrestrial, fresh water and marine ecosystems and will likely impact ecotourism. We used Landsat 4–8 imagery from 1984 through 2021 to manually map lower glacier ice margins for 19 maritime glaciers in Kenai Fjords National Park. Of these glaciers, six are tidewater, three are lake-terminating, six are land-terminating and four terminated in more than one environment throughout the study period. We used the mapped ice margins to quantify seasonal terminus position and areal change, including distinguishing between ice loss at glacier termini and along glacier margins. Overall, 13 glaciers substantially retreated (more than 2σ), 14 lost substantial area and only two underwent both net advance and area gain. The glaciers that had insubstantial length and area changes were predominantly tidewater. Cumulatively, the lower reaches of these 19 glaciers lost 42 km2 of ice, which was nearly evenly distributed between the terminus and the lateral margins. The rapid rate of glacier change and subsequent land cover changes are highly visible to visitors and locals at Kenai Fjords National Park, and this study quantifies those changes in terms of glacier length and area. Article in Journal/Newspaper glacier glaciers Journal of Glaciology Tidewater Alaska Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 69 274 251 265 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier mapping glacier monitoring mountain glaciers remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier mapping glacier monitoring mountain glaciers remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Taryn Black Deborah Kurtz Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
topic_facet |
Glacier mapping glacier monitoring mountain glaciers remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Glacier change in Kenai Fjords National Park in southcentral Alaska affects local terrestrial, fresh water and marine ecosystems and will likely impact ecotourism. We used Landsat 4–8 imagery from 1984 through 2021 to manually map lower glacier ice margins for 19 maritime glaciers in Kenai Fjords National Park. Of these glaciers, six are tidewater, three are lake-terminating, six are land-terminating and four terminated in more than one environment throughout the study period. We used the mapped ice margins to quantify seasonal terminus position and areal change, including distinguishing between ice loss at glacier termini and along glacier margins. Overall, 13 glaciers substantially retreated (more than 2σ), 14 lost substantial area and only two underwent both net advance and area gain. The glaciers that had insubstantial length and area changes were predominantly tidewater. Cumulatively, the lower reaches of these 19 glaciers lost 42 km2 of ice, which was nearly evenly distributed between the terminus and the lateral margins. The rapid rate of glacier change and subsequent land cover changes are highly visible to visitors and locals at Kenai Fjords National Park, and this study quantifies those changes in terms of glacier length and area. |
format |
Article in Journal/Newspaper |
author |
Taryn Black Deborah Kurtz |
author_facet |
Taryn Black Deborah Kurtz |
author_sort |
Taryn Black |
title |
Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
title_short |
Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
title_full |
Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
title_fullStr |
Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
title_full_unstemmed |
Maritime glacier retreat and terminus area change in Kenai Fjords National Park, Alaska, between 1984 and 2021 |
title_sort |
maritime glacier retreat and terminus area change in kenai fjords national park, alaska, between 1984 and 2021 |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.55 https://doaj.org/article/88c3ae8b97164adabba77be379a16bfe |
genre |
glacier glaciers Journal of Glaciology Tidewater Alaska |
genre_facet |
glacier glaciers Journal of Glaciology Tidewater Alaska |
op_source |
Journal of Glaciology, Vol 69, Pp 251-265 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022000557/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.55 0022-1430 1727-5652 https://doaj.org/article/88c3ae8b97164adabba77be379a16bfe |
op_doi |
https://doi.org/10.1017/jog.2022.55 |
container_title |
Journal of Glaciology |
container_volume |
69 |
container_issue |
274 |
container_start_page |
251 |
op_container_end_page |
265 |
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1766008216447090688 |