Which risk increases when a large glacial lake outburst flood (GLOF) occurs toward lower elevations?

💡 Explanation

When a GLOF discharge increases rapidly, shear stresses in the downstream river channel increase because of the higher flow rates, leading to bank erosion and increased sediment transport, which can cause the river to jump its banks. Therefore, channel avulsion is more likely downstream, rather than the alternatives focusing on seismic activity, isostatic rebound, or albedo effects which relate to different geophysical processes.

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