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← ScienceWhich condition decreases signal propagation through oceanic waveguides?
A)Increased thermocline stratification
B)Reduced water column pressure
C)Decreased salinity gradients
D)Elevated surface wave amplitude✓
💡 Explanation
Elevated surface wave amplitude impedes propagation of acoustic signals due to bubble creation which causes scattering. This is because the mechanism of cavitation generates interference; therefore scattering loss is increased rather than constructive interaction from stratification.
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