Which geological hazard increases when permafrost thaws beneath Arctic coastlines?

💡 Explanation

When permafrost thaws, sediment cohesion decreases because ice binding the soil particles melts, leading to slope instability and increasing the risk of submarine landslides. Therefore, submarine landslides are more likely, rather than eruptions, tsunamis, or sinkholes which require different geological settings and mechanisms.

• Which outcome results when thermohaline circulation weakens near the Greenland ice sheet melt?
• Which condition accelerates karst landscape development by leaching?
• Which outcome occurs when saturated glacial sediments experience permafrost thaw?
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• Which effect is directly caused by the stick-slip mechanism along transform plate boundaries?
• Which phenomenon primarily causes uplift along a reverse fault zone?