Which geomorphic feature commonly results from thermal expansion of permafrost?

💡 Explanation

Polygonal ground forms because repeated freeze-thaw cycles cause ice wedging; this cycle expands and contracts permafrost. Therefore, patterned ground develops, rather than accelerated erosion, because expansion fractures the surface.

• Which phenomenon causes increased marine productivity along coastlines with offshore winds?
• Which risk significantly increases during interseismic periods near locked faults?
• Which risk sharply increases above buried pipelines where fluctuating groundwater induces karstic features?
• Which outcome results when pyroclastic flows enter a drainage basin?
• Which outcome occurs when wind exceeds saltation threshold?
• Which soil consequence results when increased water runoff accelerates weathering?