Which outcome results when a glacier surge obstructs a subglacial lake's outlet?

💡 Explanation

Lake blockage increases hydrostatic pressure upstream; therefore a glacial outburst flood (jökulhlaup) occurs because water suddenly breaches the blockage. Rather than changing sediment, melt rate or light because blocked currents build pressure.

• Which outcome occurs when continuous rainfall permeates limestone bedrock?
• Which outcome occurs when glacial outwash plains undergo subsequent deflation under high silt content?
• Which outcome accelerates lowland coastal erosion when bioturbation increases?
• Which failure mode is accelerated when freeze-thaw cycles induce solifluction on a retaining wall's backfill?
• Which deformation occurs when seismic waves pass through different rock types near a transform fault?
• Which cave feature results from water oversaturation with calcium carbonate?