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EQUILIBRIUM LINE
The line on a glacier separating the accumulation zone from the ablation zone and marking where annual accumulation and ablation are equal. The equilibrium-line altitude, the altitude of the equilibrium line, is a sensitive indicator of climaticchange (see equilibrium-line altitude (ELA) reconstruction). The steady-state ELA delimits the elevation where the glacier net balance is zero. The climatic ELA is the annual mean ela ...
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