Which risk increases when tephra accumulation overwhelms lahars?

💡 Explanation

Downstream erosion is significantly increased when heavy tephra deposits mobilize into rapidly flows via mass wasting. This occurs because of the increased sediment load delivered downstream, therefore increasing erosive power, rather than other environmental outcomes.

• Which outcome commonly results where oceanic transform faults terminate near subduction zones?
• Which outcome occurs when increased surface temperatures strengthen thermal expansion effects globally?
• Which phenomenon causes the formation of thermoclines in deep temperate lakes during summer months?
• Which process primarily influences the stability of fjord slopes following glacial retreat, potentially leading to landslides?
• Which outcome increases rates of erosion in cirques?
• Which deformation mechanism causes increased earthquake frequency along transform plate boundaries given increased friction?