Articles | Volume 17, issue 6
Research article
22 Jun 2023
Research article |  | 22 Jun 2023

Differential impact of isolated topographic bumps on ice sheet flow and subglacial processes

Marion A. McKenzie, Lauren E. Miller, Jacob S. Slawson, Emma J. MacKie, and Shujie Wang

Data sets

Streamlined subglacial bedforms across isolated topographic highs in the Puget Lowland, Washington state M. A. McKenzie, L. M. Simkins, J. S. Slawson, and S. Wang

Short summary
Topographic highs (“bumps”) across glaciated landscapes have the potential to affect glacial ice. Bumps in the deglaciated Puget Lowland are assessed for streamlined glacial features to provide insight on ice–bed interactions. We identify a general threshold in which bumps significantly disrupt ice flow and sedimentary processes in this location. However, not all bumps have the same degree of impact. The system assessed here has relevance to parts of the Greenland Ice Sheet and Thwaites Glacier.