East Asia and Western Pacific METEOROLOGY AND CLIMATE

500
In order to show quantitatively the truth of these
behaviours, Lyapunov exponent LE are computed (6,7,8) ,
they are given in table 1.
TABLE 1, Lyapunov exponent spectrum for chaotic
and periodic attractor.
Be^ 1 071
p
c
S
R;
0-40
0*5
Q.IO
R 6
so
50
so
LE, -
0.00
o.&8>
0.00
LE,
-O.S4
0-00
-0.75
LE,
-;.S8
-/-o3
-/.76
Lt+
-4.il
-7:26
-4.65
LE 5
-*8.&f
-3i.8a
-36-63
V, The Interaction Of Internal Wave And Turbulence
From Fig. 1, the internal gravity wave and turbulence
may appear intermittently when R. approaches i. For
example, the internal gravity wave extracts energy from
the mean field to form a velocity field with a strength
of 10 order for R =50,R. =0.40. But the internal wave
may disappear until R.=0.20, and a chaotic field is
formed.
After the internal waves have been formed, the mean
internal energy increases Tt "^^o when the temperature
stratification is stable. Therefore 7-7^:> y«-y a >
That is -CV-VaX-C Vo-Va) >
or
C*