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C12 TURBULENT DIFFUSION PARAMETERS

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* AHO: CONSTANT HORIZONTAL MOMENTUM AND MASS DIFFUSIVITY m*m/s

* AHD: DIMESIONLESS HORIZONTAL MOMENTUM DIFFUSIVITY (ONLY FOR ISHDMF>0)

* AVO: BACKGROUND, CONSTANT OR EDDY (KINEMATIC) VISCOSITY m*m/s

* ABO: BACKGROUND, CONSTANT OR MOLECULAR DIFFUSIVITY m*m/s

* AVMX: MAXIMUM KINEMATIC EDDY VISCOSITY m*m/s (DS-INTL)

* ABMX: MAXIMUM EDDY DIFFUSIVITY m*m/s (DS-INTL)

* VISMUD: CONSTANT FLUID MUD VISCOSITY m*m/s

* AVCON: EQUALS ZERO FOR CONSTANT VERTICAL VISCOSITY AND DIFFUSIVITY

* WHICH ARE SET EQUAL TO AVO AND ABO, OTHERWISE SET TO 1.0

* ZBRWALL: SIDE WALL LOG LAW ROUGHNESS HEIGHT. USED WHEN HORIZONTAL

* MOMENTUM DIFFUSION IS ACTIVE AND AHO OR AHD ARE NONZERO

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