Which outcome occurs during cirque formation with nivation?

💡 Explanation

Bergschrund wedging along the cirque headwall significantly enhances erosion by freeze-thaw because the bergschrund crevasse provides a space that readily introduces meltwater into cracks in the rock; therefore headwall erosion increases, rather than acceleration of the main glacier flow.

• Which consequence results when groundwater velocity decreases within subterranean karst cave systems?
• Which process causes isostatic rebound when glacial ice melts completely from a substantial fjord?
• Which mechanism causes air to descend in the subtropical regions related to atmospheric circulation cells?
• Which mechanism influences stream course alignment in areas bisected by a transform fault?
• Which outcome is driven by salt weathering within coastal sea stacks that are located in a maritime region?
• Which ocean phenomenon spreads invasive species during El Niño?