Export














































T=1/FD
FD=1-FND
FD(j/an)=(1-FND)*365
Unites


















Step-pool:












save figure

H(m)



Q(m3/s)

















Ackers-White: Agr=

Bagnold: ωc=

Camenen & Larson: τc*=

Lefort: q0=

Meyer-Peter & Muller: τc*=

Parker: τc*=

Parker90: τr*=

Recking: τm*=

Rickenmann: qc=

Schocklitch: qc=

Smart & Jaeggi: τc*=

Van Rijn: uc*=

Wilcock & Crowe: τr*=

Wong & Parker: τc*=

ρ(kg/m3)=

ρs(kg/m3)=

ρs_app(kg/m3)=

β=0.5, γ2=1.5

&beta; <span id="QS1-BLD37" class="shiny-text-output"></span>
&gamma;2 <span id="QS1-BLD38" class="shiny-text-output"></span>
β=2, γ2=20

&beta; <span id="QS1-BLD37b" class="shiny-text-output"></span>
&gamma;2 <span id="QS1-BLD38b" class="shiny-text-output"></span>
β
γ2
&beta; <span id="QS1-BLD37" class="shiny-text-output"></span>
&gamma;2 <span id="QS1-BLD38" class="shiny-text-output"></span>





β
γ2
β
γ2
Q(m3/s)






















La granulometrie des cours d eau.pdf
La mesure du charriage.pdf

Version 5 - January 2026

Alain Recking , Sylvain Duchene

Eric Maldonado

INRAE, UGA, IGE, Domaine universitaire 2 rue de la Papeterie, BP 76, 38 402 Saint-Martin-d Heres cedex

Notation

ω ω=τU
Φ: , Φ=qsv/sqrt(g*(s-1)*D^3)
Ψ: , Ψ=LogD/Log2, D=2^Ψ
, Qsapp=ρ/ρapp*Qs
Re=UR/ν
ρ:
ρs:
, s=ρs/ρ
τ:
τc:
τ*: ; τ*=τ/(g(ρs-ρ)D) <=> τ*=RS/((s-1)D)
τc*: ; τc*=τc/(g(ρs-ρ)D)
, u*=sqrt(τ/ρ)

Other tools














τ*c=

τ*(D50) , Φ(D50)










β=0.5, γ2=1.5

β
τ*/τ*c<1)
γ2
β=2, γ2=20

β
τ*/τ*c<1)
γ2
β
γ2
β
τ*/τ*c<1)
γ2 




                  

                  

                

                

                  

                    

                      

                      

                      

                        

                          
                          

                            
                            
                          

                        

                        

                          
                          

                            
                            
                          

                        

                        

                          
                          

                            
                            
                          

                        

                        

                          
                            

                          
                        

                        

                          

                            

                              
                              
                            

                          

                          

                            

                              
                              
                            

                          

                        

                        

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                          q (m3/s/m):
                        

                        

                          

                            

                              
                              
                            

                          

                          

                            

                              
                              
                            

                          

                        

                        

                          τ*/τ*c
                        

                        

                          

                            

                              
                              
                            

                          

                          

                            

                              
                              
                            

                          

                        

                        

                          
                        

                        
                        

                        

                      

                      

                        

                          

                            
                              

                            
                          

                        

                        

                          
                        

                        

                          

                            
                              

                            
                          

                        

                        

                        

                        

                      

                    

                    

                      

                        

                          

                        

                      

                      

                        
                      

                      

                        

                          

                        

                      

                      

                        

                          

                            
                            

                            

                            

                              

                                
                                  

                                
                              

                              

                                
                                  
                                  
                                
                              

                            

                            

                            

                            

                            

                            

                              
                              

                                
                                
                              

                            

                            

                              

                                
                                

                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                

                              

                            

                            

                              

                                
                                

                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                  
                                

                              

                            

                          

                          

                            

                              

                                

                                  

                                

                              

                              

                                

                                  
                                  

                                    
                                    
                                  

                                

                              

                              

                              

                                
                                  

                                
                              

                              

                                
                                

                                  
                                  
                                  
                                  
                                  
                                  
                                

                              

                              

                                
                                  

                                
                              

                              

                                
                                

                                  
                                  
                                

                              

                              

                                

                                  

                                    

                                      
                                    

                                  

                                

                                

                                  

                                    

                                      
                                    

                                  

                                

                              

                              

                                
                                
                              

                              

                                
                                
                              

                            

                            

                              

                            

                            
                              
                              
                            
                          

                        

                        

                        

                        

                          

                            

                          

                          

                            

                              
                              

                                
                                
                              

                            

                            
                            

                            

                            

                              
                              

                                
                                
                              

                            

                            

                              

                                
                              

                            

                            

                              

                                
                              

                            

                            

                              

                                
                              

                            

                            
                              
                              
                            
                            

                            

                            

                              
                              

                                

                                  
                                

                                

                                  
                                

                                

                                  
                                

                              

                            

                            

                            

                              
                              
                            

                            

                            
                              
                              
                            
                            

                            

                            

                            
                            

                              
Button below creates a new GSDfi.txt file to be copied in /data folder. Use it ONLY if you ahave added new data in the data set. Be patient it takes a few minutes to complete

                              

                              

                              
                                
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