Which mechanism dictates seasonal stratification in a dimictic glacial lake at moderate latitude?

💡 Explanation

When seasonal air temperature changes, temperature gradients cause density stratification. Dimictic lakes experience two mixing periods (spring and fall turnovers) influenced by the seasonal air temperature variations, where as water density difference directly impact this mechanism. Therefore temperature gradients in water determine stratification, rather than winds, mineral precipitation, or osmotic pressure, which have secondary or negligible effects.

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