Vertical viscosity and diffusivity in EFDC model

In EFDC model, subroutine CALAV calculates vertical viscosity and diffusivity. There are three options available to calculate the vertical viscosity and diffusivity. The three methods are :

a) Galerpin
IF(ISTOPT(0) == 1)THEN
SFAV0= 0.392010
SFAV1= 7.760050
SFAV2=34.676440
SFAV3= 6.127200
SFAB0= 0.493928
SFAB1=34.676440
RIQMIN=-0.999/SFAB1
ENDIF

b) Kantha and Clayson (1994)
IF(ISTOPT(0) == 2)THEN
SFAV0= 0.392010
SFAV1= 8.679790
SFAV2=30.192000
SFAV3= 6.127200
SFAB0= 0.493928
SFAB1=30.192000
RIQMIN=-0.999/SFAB1
ENDIF

c) Kantha (2003)
IF(ISTOPT(0) == 3)THEN
SFAV0= 0.392010
SFAV1=14.509100
SFAV2=24.388300
SFAV3= 3.236400
SFAB0= 0.490025
SFAB1=24.388300
RIQMIN=-0.999/SFAB1
ENDIF

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