earth-sciences

Limnology & Freshwater Science

Lakes are sentinels of environmental change — limnology studies their thermal structure, nutrient cycles, oxygen dynamics, sediment records, and water budgets to understand freshwater ecosystems and the climate signals they preserve.

lakesthermal stratificationeutrophicationdissolved oxygensediment coreswater budgetfreshwater ecology

Limnology is the study of inland waters — lakes, reservoirs, ponds, and wetlands — encompassing their physics, chemistry, and biology. From the seasonal turnover of temperate lakes to the oxygen-starved depths of eutrophic waters, freshwater systems host complex interactions between thermal stratification, nutrient loading, biological productivity, and sedimentation that mirror and amplify global environmental trends.

These simulations let you explore lake science hands-on. Watch thermal layers form and overturn with the seasons, trigger algal blooms by adding nutrients, trace dissolved oxygen profiles from surface to sediment, read climate history from lake sediment cores, and balance the water budget of a lake through precipitation, evaporation, and outflow.

5 interactive simulations

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Eutrophication & Algal Bloom Dynamics

Model nutrient loading from agricultural runoff and watch algal blooms develop, collapse, and create oxygen dead zones in a lake

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Dissolved Oxygen Depth Profile

Model how dissolved oxygen varies with depth in a stratified lake, from supersaturated surface waters to anoxic hypolimnion

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Lake Sediment Core Dating & Proxy Records

Explore how lake sediment layers record environmental history through radiometric dating, pollen, diatoms, and geochemical proxies

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Lake Thermal Stratification & Turnover

Visualize how temperature layers form in lakes through seasonal heating and wind mixing, including spring and fall turnover events

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Lake Water Balance & Residence Time

Calculate a lake's water budget from precipitation, evaporation, inflow, and outflow — and determine how long water stays in the lake