DIFFUSION FROM A CONTINUOUS SOURCE AT SEA
323
fJ”.4 respectively. significant at the 0.1 9; level in each case. In fact, there was
a direct correlation between K , and K , represented by
K , x K:.’5
One possible explanation of the proportionality of K, to K , is that the
apparent lateral diffusion arises from current shear interacting with vertical
1007
lo-‘
CI
ii
Y 6
cu‘
s
1
2
5 1 6
Wind Speed (mhec)
Fic;. 5. Variation of vertical diffusion coefficient KI with wind spced W : 0 1970 data,
x 1971 data.
diffusion. In an unbounded or semi-unbounded medium this would give a
K , increasing linearly with K : (Saffman. 1962). The measurements ofcurrent
shear were not accurate enough, however, to make a direct test of this
hypothesis.
323
fJ”.4 respectively. significant at the 0.1 9; level in each case. In fact, there was
a direct correlation between K , and K , represented by
K , x K:.’5
One possible explanation of the proportionality of K, to K , is that the
apparent lateral diffusion arises from current shear interacting with vertical
1007
lo-‘
CI
ii
Y 6
cu‘
s
1
2
5 1 6
Wind Speed (mhec)
Fic;. 5. Variation of vertical diffusion coefficient KI with wind spced W : 0 1970 data,
x 1971 data.
diffusion. In an unbounded or semi-unbounded medium this would give a
K , increasing linearly with K : (Saffman. 1962). The measurements ofcurrent
shear were not accurate enough, however, to make a direct test of this
hypothesis.