-12Pigure
7
.
;
shows island soil
7 oe
sites other than
*~
decline slopes at
Belle.
Pre-Hectar
levels are indt-
cated by short
horizontal bars at
the left edges of
the points are
widely scattered
and the trends poorly defined. Variations in exact
location of sample
taking, changes of
personnel, and the
use of single
samples contributed
to this variability.
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Levels of
redioactivity vere
much higher at the
northern than at
the southern localities.
he
Save
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a
aren
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way 4
1996
ooo
Pig. 7
Table 3 gives decay slopes of island soil samples froma
various islands over a time span of from one or two months to
more than two years.
ing -0.9 t 0.02.
Slopes ranged from -0.6 to -1.3, averag-
Since the five soil decay curves with more than two points
are fairly straight lines, 2-point slopes vere used to expand
the scope of observations. The period of time covered by the
decays is close to that of the declines.
Table 3 shows that
declines vere steeper than decays except at Janet where decays
vere steeper, and at Vere where decay and decline vere equel.