Mapped ice wedge polygon patterns from GeoEye-1, WorldView-1, 2008-2010 at four sites in Siberia and Alaska ...

• Main Authors: Ulrich, Mathias, Grosse, Guido, Strauss, Jens, Schirrmeister, Lutz
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: ground ice; ice wedge; Permafrost; Polygonal Networks; thermokarst; Yedoma; Event label; Latitude of event; Longitude of event; Latitude of event 2; Longitude of event 2; File content; File name; File format; File size; Uniform resource locator/link to file; Satellite remote sensing; Permafrost Research AWI_Perma; Polygons in tundra wetlands state and dynamics under climate variability in Polar Regions POLYGON; Ice; permafrost; Thermokarst; Tundra; wedge*; Alaska; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.919936; https://doi.pangaea.de/10.1594/PANGAEA.919936

Detailed calculations of ground-ice volumes in permafrost deposits are necessary to understand and quantify the response of permafrost landscapes to thermal disturbance and thawing. Ice wedges with their polygonal surface expression are a widespread ground-ice component of permafrost lowlands. Therefore, the wedge-ice volume (WIV) is one of the major factors to be considered, both for assessing permafrost vulnerability and for quantifying deep permafrost soil carbon inventories. Here, a straightforward tool for calculating the WIV is presented. This GIS and satellite image-based method provides an interesting approach for various research disciplines where WIV is an important input parameter, including landscape and ecosystem modeling of permafrost thaw or organic carbon assessments in deep permafrost deposits. By using basic data on subsurface ice-wedge geometry, our tool can be applied to other permafrost region where polygonal-patterned ground occurs. One is able to include individual polygon ...