Which mechanism controls tephra dispersal during explosive eruptions?

💡 Explanation

Magmatic volatile content dictates eruption explosivity; therefore, buoyancy flux controls tephra dispersal, because gas expansion propels ash high into the atmosphere, rather than lava flow properties influencing airborne particles.

• Which process most directly contributes to sorting alluvial sediments by particle size during fluvial transport?
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• Which process causes isostatic rebound when glacial ice melts completely from a substantial fjord?
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