We are compiling cross-polar datasets of marine glacial landforms based on high-resolution multibeam bathymetry. Independent of the datasets, we have identified unique ice-sheet settings in terms of topography (e.g. reverse bedslopes), geology (e.g. crystalline bedrock), and glaciology (e.g. catchment size). Glacial landforms within datasets will be used to characterize geomorphic signatures associated with each ice-sheet setting. We will evaluate the degree to which certain processes or modes of retreat are locally-specific or widespread and ubiquitous to all identified ice sheet settings. The overall goal of the project is to improve understanding of the fundamental significance of small-scale ice sheet-marine processes in governing the large-scale stability of marine ice sheet sectors. This work will contribute to increasing our understanding of the factors that control ice flow stability and grounding-line retreat in different ice-sheet settings.
Marine geological databases
- Swedish RVIB Oden bathymetry datasets hosted by Stockholm University Bolin Centre for Climate Research
- US RVIBs Nathaniel B. Palmer and Laurence M. Gould bathymetry datasets hosted by the Marine Geoscience Database System of Lamont-Doherty Earth Observatory
- US database of marine sediment cores hosted by the Index to Marine and Lacustrine Geological Samples of NOAA National Centers for Environmental Information