3. Stream Cross-Section for Q
Measure V (current-meter) at 0.2 and 0.8 of depth
Average V and multiply by (width * depth)
Sum up across stream to get total Q = S (Vi Di Wi)

5. Rating curve hysteresis loop in Zenne river (Lot), July 2012 event: blue triangles – rising stage, green squares – falling stage

7. Flume tests carefully conducted by Nomicos (1957) at CalTech:
constant-depth, unique sediment size d=0.152mm
difficult to reconcile with the standard formulation for the ‘alluvial resistance coefficient’:

8. .

10. Bed-material discharge
Buoyancy-affected turbulence
Bed morphology adaptation
Alluvial resistance

11. Hyperbolic tangent of x = tanh x = (ex - e-x)/(ex + e-x)

15. If lBF is the wavelength from crest to crest, the celerity of the associated gravity wave is given by Airy’s law:

18. Facteur m
Ok théorie
m = 1, m = 1,2

20. Discontinuity rating curve
original discontinuity rating curve
Modified discontinuity rating curve