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Englacial Drainage (Ice crystal boundaries (Seepage possible at grain…
Englacial Drainage
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Moulins
Roughly circular, near vertical shaft within glacier / ice sheet
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Moulin formation
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- Meltwater enters crevasse that intersects englacial drainage system
- Heat generated by friction
--> maintains connection even after crevasse closes
- Englacial conduit at crevasse base
--> drains downwards into glacier / IS
Dynamics
& Melt
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∴ litlte basal sliding, fuelling feedback
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