Ice Wedge Network Centerline and Ice-Wedge Polygon Coverage in the Bernard River Watershed, Banks Island Canada; 2010-2020 ...
Ice-wedge polygon (IWP) is a landform found in landscapes underlain by permafrost. IWPs form due to the development of ice wedges, where each IWP is bounded by ice wedges. Ice wedges form due to repeated cracking of the soil during winter and by snowmelt water infiltrating into the cracks and freezi...
| Main Authors: | , , |
|---|---|
| Format: | Dataset |
| Language: | English |
| Published: |
NSF Arctic Data Center
2024
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.18739/a2fj29f5f https://arcticdata.io/catalog/view/doi:10.18739/A2FJ29F5F |
| Summary: | Ice-wedge polygon (IWP) is a landform found in landscapes underlain by permafrost. IWPs form due to the development of ice wedges, where each IWP is bounded by ice wedges. Ice wedges form due to repeated cracking of the soil during winter and by snowmelt water infiltrating into the cracks and freezing. Repeated over thousands of years, the process results in ice wedges several 10s of feet deep. The melting of the top of the ice wedge results in ground subsidence and depending how extensive the thaw is across the landscape, new ponds or lateral drainage channels form. This data collection supported an assessment of the length of the ice wedge network in the Barnard River watershed (10,540 km2), Banks Island, Canada. The data collection is derived from the pan-Arctic map of ice-wedge polygons (Witharana et al. 2023, Ice-wedge polygon detection in satellite imagery from pan-Arctic regions, Permafrost Discovery Gateway, 2001-2021. Arctic Data Center. doi:10.18739/A2KW57K57), which used Maxar satellite imagery ... |
|---|