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Figure 10.15 Measured values at Launceston, Tasmania, of the precipitation rate P, and values of the lake evaporation Eo (representing the potential evaporation rate Et), calculated from temperature values. The actual evaporation rate Ea is estimated as whichever is the less of Eo and 112 M2 mm/wk (Figure 4.10), where M is the soil's actual water content as a proportion of the soil's available-water capacity, assumed to be 100 mm of water. The soil dries out when Ea is greater than P, until M equals {Eo/ 112}05 (Linacre 1973:451). Recharge occurs when P is greater than Eo, until the soil is saturated. Thereafter, there is runoff R, as long as P exceeds Eo. The shaded areas of recharge and soil drying in the diagram must be equal because there is a long-term balance of drying and rewetting of the soil.

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Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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