Agriculture
Volume 7, Numéro 2, Pages 68-72
2016-12-31
Flow Deficit On The High Setif Plateaus. Coutagne And Turc Methods
Auteurs : Chenafi Houria .
Résumé
The flow deficit (D) represents an hydrobioclimatic characteristic. It is evaluated over a period of 34 years. The principle is based on models developed by Coutagne and Turc. The mean annual results indicate that cumulative rainfall (P) is 386.4 mm determining a flow deficit of 334.6 mm. Coutagne's equation reveals that D is 341.2 mm. Turc model takes an average relative difference of 8%. However, the value of P = 369.6mm represents the threshold below which the year is considered dry. Hydrological water balance generates 48.0mm of water flow.
Mots clés
Flow deficit, dry year, water blade, model, flux
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