Which mechanism causes tsunami formation during a subduction zone earthquake with significant vertical displacement?

💡 Explanation

During a subduction zone earthquake, rapid crustal uplift occurs because the overriding plate rebounds after sudden release of accumulated stress, directly displacing the water column above it, forming a tsunami. Therefore rapid crustal uplift results, rather than resonance, landslides, or salinity changes – which are secondary or unrelated effects.

• Which atmospheric effect causes an elongated wave pattern in upper-level winds?
• Which mechanism initiates deep-water formation in the North Atlantic during winter?
• Which outcome occurs when thawing overburden destabilizes Arctic slopes?
• Which feedback arises when increased rainfall rapidly saturates soluble bedrock, forming new sinkholes?
• Which effect amplifies coastal erosion when increased wave refraction bends wave fronts?
• Which process drives the formation of banded iron formations in Precambrian lake deposits?