Periodic Reporting for period 1 - EROSIVE (The influence of Earth-surface processes on solid-Earth, ice-sheet, and sea-level interactions for Scandinavian Ice-Sheet collapse)
Période du rapport: 2018-08-01 au 2020-07-31
Within the framework of this project will i) constrain solid-Earth deformation and global sea-level changes due to Quaternary erosion and deposition in the Scandinavian region, ii) assess the influence of long-term glacial erosion for SIS dynamics, ice volume, and sea-level contributions, and iii) gain significant insight into important interactions between surface processes, solid-Earth deformation, ice-sheet variability and sea-level changes, and improve our understanding of SIS collapse.
This project has found that erosion and deposition during glacial times has a significant impact on solid Earth deformation and local sea level, both in Scandinavia and in Greenland. In particular, the selective glacial erosion that form deep valleys and fjords will result in surface changes that extend far beyond the glacial troughs and the onshore region in general. As a result, the coastline regions on fjord-dominated areas may have experiences as much as several hundred meters of relative sea level fall during glacial times. The project has also found that ice sheets are widely affected by changes in the underlying topography. By changing the the amount of ice that can be stored on land, landscape evolution has the potential to influence global sea level. Finally, the work from this project is expected to improve the general understanding of landscape evolution in Scandinavia during glacial times, in particular related to the effects of erosion-induced solid-Earth deformation and the effects glaciations have had in the region.