Which risk escalates as near-surface permafrost thaws in high-latitude coastal regions due to thermokarst processes?

💡 Explanation

When near-surface permafrost thaws, thermokarst landscapes form because ice melts, causing ground subsidence and coastline erosion along with higher sea levels, leading to floods. Therefore frequency of coastal flooding increases, rather than decreased river discharge, reduced surges, or sediment stabilization, each needing opposite environment changes.

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