Model studies on the formation of inner moraines in the ablation areas of glaciers
Formation mechanism of inner moraines was studied in a cold laboratory near 0℃ by simulation of compressing ice flow near the terminus of glaciers. For this study an apparatus was made to visualize the process of incorporation of sands into the ice mass in conjunction with two-dimensional ice flow....
| Main Authors: | , |
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| Format: | Report |
| Language: | English |
| Published: |
The Institute of Low Temperature Science, Hokkaido University
1983
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| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1488 http://id.nii.ac.jp/1291/00001488/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1488&item_no=1&attribute_id=18&file_no=1 |
| Summary: | Formation mechanism of inner moraines was studied in a cold laboratory near 0℃ by simulation of compressing ice flow near the terminus of glaciers. For this study an apparatus was made to visualize the process of incorporation of sands into the ice mass in conjunction with two-dimensional ice flow. The results indicate the following : When a stagnant ice zone exists near the terminus, the sands are incorporated into the ice mass in the upstream side of the zone by shear action. If an obstacle exists on the bottom at this side and regelation takes place on the downstream side of the obstacle, the sands are incorporated into the ice mass immediately on the top of the regelation ice and further move obliquely upward along the flow line to the upper surface of the glacier. |
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