Submarine Geomorphology of the Continental Shelves of Southeast and Southwest Greenland from Olex Data ...
Mass loss from the Greenland Ice Sheet remains the largest uncertainty in projections of sea level rise for the 21st century. Reconstructing the former history of the Greenland Ice Sheet during the Late Quaternary provides important constraints on how the ice sheet will behave in response to future...
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| Format: | Thesis |
| Language: | English |
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Apollo - University of Cambridge Repository
2013
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| Online Access: | https://dx.doi.org/10.17863/cam.12838 https://www.repository.cam.ac.uk/handle/1810/266767 |
| Summary: | Mass loss from the Greenland Ice Sheet remains the largest uncertainty in projections of sea level rise for the 21st century. Reconstructing the former history of the Greenland Ice Sheet during the Late Quaternary provides important constraints on how the ice sheet will behave in response to future environmental change. In order to improve our understanding of the extent, dynamics and deglacial retreat of the Greenland Ice Sheet during and after the Last Glacial Maximum (LGM), this study used geophysical bathymetric data to investigate the geomorphology of the continental margins of Southern Greenland. In particular, Olex data, which consist of multiple single-beam echo-sounder lines, were utilised. Turbidity current-channel systems and gullies on the continental slopes, and moraines on the continental shelf edge of Southern Greenland indicate that the Greenland Ice Sheet extended to the continental shelf edge during the LGM. Drumlins and crag-and-tails, located in troughs, suggest that twenty ice streams ... |
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