E) Organisations non Gouvernementales / Non Governmental Organizations |
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| Authors: | Dr HUGO BOYKO |
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| Institution: | Section d'Hydrologie de l'Institut Royal Météorologique de Belgique , UCCLE |
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| Abstract: | SUMMARY The evaporation tank consists of a square pan with a flat base, 2 metres long and 0, 7 metre deep, set into the ground with the rim 0, 1 metre above, and connected to a well on which is installed a limnigraph. This limnigraph records continuously fluctuations of the free water surface. The recordings show that a large amount of water can be evaporated during rainfall. This phenomenon is specific at every evaporation tank with a free water surface. It is only during the dry intervals that a strong correlation can be established between the evaporation measured in the tank and the potential evapotranspiration of the surrounding natural surfaces. In order to locate the dry intervals and to measure the evaporation only during these intervals, it is necessary to use an apparatus provided with a continuous recording mechanism |
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| Keywords: | artificial neural network emulation runoff hidden node River Test England |
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