Increased coastal erosion occurs when intensification alters gyre currents because of which mechanism?

💡 Explanation

Intensification of gyres amplifies the geostrophic flow imbalance creating stronger, localized currents interacting with coastlines; because erosion increases from direct current impact, rather than wave energy, differing tidal range, or only altering deposition.

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• Which mechanism during a large subduction zone earthquake causes rapid coastal land subsidence?
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