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← GeographyWhich mechanism influences the meandering patterns of geostrophic boundary currents along coastlines?
A)Thermohaline circulation upwelling forcing
B)Baroclinic instability horizontal shearing✓
C)Ekman transport wind gyre divergence
D)Tidal resonance wave energy amplification
💡 Explanation
When a strong horizontal shear exists in a geostrophic boundary current, baroclinic instability occurs because small perturbations grow by converting potential energy into kinetic energy, causing large meanders. Therefore baroclinic instability causes meandering current patterns, rather than upwelling, Ekman transport, or tidal oscillations, which depend on different physical processes.
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