Which threat to hydroelectric dams occurs because rapid tephra deposition?

💡 Explanation

When a volcano errupts, rapid tephra deposition can overwhelm intake screens, which then collapse because structural load builds up excessively; therefore, 'intake screen structural overload' is correct, rather than turbine cavitation or generator failures, as it directly addresses structural problems.

• Which process creates caldera lakes after dome collapse?
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• Which outcome occurs when increased glacial meltwater disrupts North Atlantic gyre circulation salinity gradient?