Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway
The number of glacial lakes has grown globally concurrently with the retreat of glaciers in the last few decades, increasing the risk of potentially hazardous glacial lake outburst floods (GLOFs) and posing a threat to downstream communities. Norway has several known ice-dammed lakes that produce re...
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Cambridge University Press
2024-01-01
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| Series: | Journal of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143024000133/type/journal_article |
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| author | Jogscha Miriam Abderhalden Kristine Katherine Bly Ronja Lappe Liss Marie Andreassen Irina Rogozhina |
| author_facet | Jogscha Miriam Abderhalden Kristine Katherine Bly Ronja Lappe Liss Marie Andreassen Irina Rogozhina |
| author_sort | Jogscha Miriam Abderhalden |
| collection | DOAJ |
| description | The number of glacial lakes has grown globally concurrently with the retreat of glaciers in the last few decades, increasing the risk of potentially hazardous glacial lake outburst floods (GLOFs) and posing a threat to downstream communities. Norway has several known ice-dammed lakes that produce repeated GLOFs but as we show here, the existing GLOF database is incomplete and needs to be improved through continuous monitoring of glaciers and glacial lakes. This study examines the case of an ice cap in central Norway hosting at least four drainage-prone lakes. We reconstruct the sequence of lake drainage events through a combination of remote sensing, ground-truthing and citizen science while scrutinising the applicability of the PlanetScope imagery vs Sentinel-2 and Landsat-8 OLI products. As opposed to the Landsat imagery that often fails to resolve even the largest glacial lakes of Tystigbreen, both PlanetScope and Sentinel-2 are helpful in identifying previously unrecognised glacial lakes and undocumented drainage events. Our analysis suggests that a fusion of the two satellite products may be beneficial for automated tracking of glacial lake changes. We also demonstrate that local knowledge and systematic involvement of citizens in data collection have a potential to enrich GLOF databases. |
| format | Article |
| id | doaj-art-cbd6f3f682824fc58acf5f95e8297b9e |
| institution | Kabale University |
| issn | 0022-1430 1727-5652 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj-art-cbd6f3f682824fc58acf5f95e8297b9e2025-01-16T21:47:50ZengCambridge University PressJournal of Glaciology0022-14301727-56522024-01-017010.1017/jog.2024.13Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in NorwayJogscha Miriam Abderhalden0https://orcid.org/0009-0008-9767-2722Kristine Katherine Bly1Ronja Lappe2Liss Marie Andreassen3https://orcid.org/0000-0001-6494-4252Irina Rogozhina4Department of Geography, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Geography, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Geography, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Hydrology, Norwegian Water Resources and Energy Directorate (NVE), Oslo, NorwayDepartment of Geography, Norwegian University of Science and Technology, Trondheim, Norway Department of Geosciences, Center for Advanced Studies in Arid Zones (CEAZA), La Serena, ChileThe number of glacial lakes has grown globally concurrently with the retreat of glaciers in the last few decades, increasing the risk of potentially hazardous glacial lake outburst floods (GLOFs) and posing a threat to downstream communities. Norway has several known ice-dammed lakes that produce repeated GLOFs but as we show here, the existing GLOF database is incomplete and needs to be improved through continuous monitoring of glaciers and glacial lakes. This study examines the case of an ice cap in central Norway hosting at least four drainage-prone lakes. We reconstruct the sequence of lake drainage events through a combination of remote sensing, ground-truthing and citizen science while scrutinising the applicability of the PlanetScope imagery vs Sentinel-2 and Landsat-8 OLI products. As opposed to the Landsat imagery that often fails to resolve even the largest glacial lakes of Tystigbreen, both PlanetScope and Sentinel-2 are helpful in identifying previously unrecognised glacial lakes and undocumented drainage events. Our analysis suggests that a fusion of the two satellite products may be beneficial for automated tracking of glacial lake changes. We also demonstrate that local knowledge and systematic involvement of citizens in data collection have a potential to enrich GLOF databases.https://www.cambridge.org/core/product/identifier/S0022143024000133/type/journal_articleglacier hydrologyglacier monitoringJökulhlaups (GLOFs)mountain glaciersremote sensing |
| spellingShingle | Jogscha Miriam Abderhalden Kristine Katherine Bly Ronja Lappe Liss Marie Andreassen Irina Rogozhina Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway Journal of Glaciology glacier hydrology glacier monitoring Jökulhlaups (GLOFs) mountain glaciers remote sensing |
| title | Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway |
| title_full | Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway |
| title_fullStr | Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway |
| title_full_unstemmed | Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway |
| title_short | Tracking rapid and slow ice-dammed lake changes through optical satellites and local knowledge: a case study of Tystigbreen in Norway |
| title_sort | tracking rapid and slow ice dammed lake changes through optical satellites and local knowledge a case study of tystigbreen in norway |
| topic | glacier hydrology glacier monitoring Jökulhlaups (GLOFs) mountain glaciers remote sensing |
| url | https://www.cambridge.org/core/product/identifier/S0022143024000133/type/journal_article |
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