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Quels apports hydrologiques pour les modèles hydrauliques? Vers ...

Quels apports hydrologiques pour les modèles hydrauliques? Vers ...

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X - 38LERAT ET AL.: VALUE OF UPSTREAM FLOW MEASUREMENTS0.5tel-00392240, version 1 - 5 Jun 2009REff (UP.Meas / Bench) verif.0.40.30.20.10.00.90.75Med0.250.1−0.1−50% −25% No corrup. +25% +50%Figure 7. Statistics on relative efficiencies REff(UP-Meas/Bench) for downstream simulations(TOTAL) in validation mode. The different distributions correspond to a calibration of theUP-Meas model with corrupted upstream discharges (power transform that modifies the 99 thpercentile of the flow time-series by -50%, -25%, +25% and +50%). The performance with noncorrupted upstream flow data is named “No Corrup.”. Boxplots show the 10 th , 25 th , 50 th , 75 th ,90 th percenti<strong>les</strong> and the mean (cross) of the distribution of the criterion over the 384 subperiods.D R A F T July 24, 2008, 3:43pm D R A F T

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