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Postresp
SESAM
B-8
15-DEC-2007
B 1.7.1
Program version 6.2
Basic Constants
The following set of constants is basic to all the others:
AF = 6.6
AE = 2.0
AU = 25.0
A10 = 0.7
A1 = 0.5
KG = 35.0
KG 0 = 3.5
KG1 = 1.0
R = 0.857
K 0 = 0.5
K 00 = 3.2
M 0 = 4.0
B1 = 2.0
A20 = 0.6
A2 = 0.3
A3 = 6.0
S 0 = 0.08
S1 = 3.0
B 2 = 0.7
B3 = 3.0
B 1.7.2
Definition of sea state type
The seastate is defined as wind dominated or swell dominated according to whether the primary peak period
is below or above a value TF given by:
TF = AF ⋅ Hs
1
--3
(B.32)
Based on this, lower and upper period fractions are defined:
εL =
TF − TP
TF − TP
, εU =
TF − AU
TF − AE Hs
(B.33)