Which glacial outcome occurs when a bergschrund develops?

💡 Explanation

Crevasses widen near the bergschrund due to pressure release and subsequent frost fracture, facilitating cirque formation through nivation, because freeze-thaw cycles disintegrate rock. Therefore, the cirque enlarges, rather than terminus wastage driven by other warming or deposition away from glacier.

• Which risk increases when thawing permafrost destabilizes high-altitude mountain slopes covered with colluvium?
• After rapid tephra deposition from Plinian eruptions, which outcome diminishes slope erodibility?
• Which outcome develops when rainfall accelerates the weathering of carbonate bedrock?
• Which risk increases during prolonged saturation of a river levee's foundation soil?
• Which seismological effect occurs from intermittent strike-slip fault locking?
• Which consequence results when longshore drift is interrupted by a poorly sited harbor breakwater?