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TABS-MDS
SC CARD
SILTS CONSTANTS
SC CARD
Field
Variable
Value
Description
0,C1-2
IC1
CC
Card group identifier
1
IGS
+
sediment grain size
2
TAUECS(IGS)
+
Critical shear stress for erosion
(lbf/ft2 or N/m2)
Note: Since grain size 1 represents the clay fraction, it would seem that a critical shear stress for erosion need not be
specified for grain size 1 (the critical shear stress for erosion of the clay layer is specified via the CC card).
However, in general, the critical shear stress for deposition for grain size N is equal to the critical shear stress for
erosion for grain size N-1. Hence, a value of the critical shear stress for erosion SHOULD be specified for grain size
1, in order to supply a value of the critical shear stress for deposition for grain size 2.
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