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TABLE 2
BIKINI AND ENEU ISLANDS:
CESIUM-137 IN SOIL (1987)°
b
SPECIFIC ACTIVITY (pCi’g) AT SPECIFIED DEPTHS —
ISLAND
NO. OF
SITES
0-40 em®
0-10 cm
(ROOTING
(SURFACE
ZONE)
10-15 om
45-25 om
25-40 cm
40-60 cm
60-100 cm
ZONE}
BIKINI
MEDIAN (MEAN)”
DISTRIBUTED®
MEAN
145-157
25 (37.9)
55 (74)
27 (43)
10 (29}
4.2(18}
1 (6.6)
145-157
28.6
55
36
23.4
9.7
3.0
ENEU
MEDIAN (MEAN)?
DISTRIBUTED”
MEAN
126-133
1.93 (2.88)
3.6 (6.1)
2.4 (3.4)
1.6 (2.4)
88 (1.5)
25 (1.149
126-133
2.31
a4
2.6
2.1
1.0
0.4
1987 is the earliest data of resettlement.
Robison et. al. (6), based on soil dry weight, which is about 80 percent
of fresh weight.
Based on least squares fit of Figure 4 and Equation 2, Section 2.2.
The values at other depths are the observed values.
The data for the entire island were pooled at each depth.
For the distributed mean, Eneu and Bikini were each divided into
6 areas, the median for each area (at each cepth) determined, and the
island mean of the 6 medians calculated.
85 sites.
63 sites.
I00004b
50