Ocean 18O/16O Ratios During Warming Periods: An Explanation

Powered By What Happens To Ocean 18o 16o Ratios In The Ocean During A Warm Period

During a warm period, the ratio of 18O to 16O in the ocean generally decreases. This is because warmer temperatures lead to increased evaporation. Lighter isotopes like 16O evaporate more readily than heavier isotopes like 18O. Consequently, the water vapor becomes enriched in 16O, which then precipitates back into the ocean, diluting the existing 18O/16O ratio and resulting in lower values in the ocean water.

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