The long multiphase trunk–tributary surge history of the high-Arctic Chapman Glacier, 1959–2023 ...
Surge-type glaciers have been identified throughout the Canadian Arctic, but detailed surge behavior has been sparsely studied. Recent high spatiotemporal resolution satellite products enable such studies, allowing for better process-based understanding of surging in this region. Here, we present a...
| Main Authors: | , , , |
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| Format: | Text |
| Language: | unknown |
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Taylor & Francis
2025
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| Online Access: | https://dx.doi.org/10.6084/m9.figshare.28270637.v1 https://tandf.figshare.com/articles/journal_contribution/The_long_multiphase_trunk_tributary_surge_history_of_the_high-Arctic_Chapman_Glacier_1959_2023/28270637/1 |
| Summary: | Surge-type glaciers have been identified throughout the Canadian Arctic, but detailed surge behavior has been sparsely studied. Recent high spatiotemporal resolution satellite products enable such studies, allowing for better process-based understanding of surging in this region. Here, we present a multidecadal record (1999–2023) of flow velocities, strain rates, and elevation changes for Chapman Glacier, a 40-km-long land-terminating glacier on Umingmak Nuna (Ellesmere Island), using ITS_LIVE (Inter-mission Time Series of Land Ice Velocity and Elevation), Sentinel-1, and elevation time series data products. We further use historical remote sensing data to analyze surface morphology and displacement from 1959 to 2023. After an inferred century-long or longer quiescent phase, Chapman Glacier surged for at least twenty-two years in two successive phases. Phase 1 occurred from 2001 to 2012 and was spatially limited to the trunk, and Phase 2 started around 2012 and continues to 2024, impacting the main tributary ... |
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