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TABLE 1
ISLANDS OF BIKINI ATOLL
1
.
AREA, EXPOSURE RATE, AND SOIL-SURFACE —
ZONE ACTIVITY OF CESIUM-137 (AS OF 1987)
EXPOSURE RATE®
(R/y}
SOIL ACTIVITY, 0-10 cm DEPTH
.
'
TERRESTRIAL SURVEY?
AREA
(KM2}
ISLAND
i
een
NAM
IROW
ODRIK
LOMILIK
AOMEN
TERRESTRIAL
SURVEYS
0.54
0.20
0.04
0.22
0.17
0.15
0.048
0.011
0.15
0.033
_
_
_
_
-
B6 BIKINI
2.41
0.22
0.23
B87
88
89
B10
B11
0.09
0.03
0.02
0.08
0.03
0.00085
0.0053
0.00085
0.14
0.00085
B12 ENEU
1.22
0.016
B13
B14
B15
B16
B17
B18
B19
B21
0.41
0.10
0.23
0.10
0.96
0.14
0.17
0.05
0.00085
0.0093
0.0093
0.03
0.26
0.31
0.078
BOKANTAUK
IOMELER
ENAELO
ROJKERE
EONJEBI
AEROKOJLOL
BIKORIN
LELE
ENEMAN
ENEDRIK
LUKOJ
JELETE
OROKEN
AERIAL
survey>
SAMPLES
DISTRIBUTED
MEAN
(pCi/’g)}
{NUMBER}
(pCi/g)}
30
9.7
2.3
30
6.6
_
_
_
_
—
_
—
_
_
157
55
0.13
0.81
13
22
0.13
_
—
—
—
—
_
—~
0.02
3.3
133
44
_
_
_
_
_
_
~
—
0.13
_
1.9
1.9
6.0
54
63
16
—
—
_
_
—
—
_
~
_
_
“
—
_
_
_
—
45
.
vs
1
a.
'
La
f
.
ft
‘' :
vin
f-
B1
B2
B3
B4
B5
AERIAL
SURVEYS
a.
:
a..
b.
Tipton and Meibaum (2).
The exposure rate and the specific activity
calculated from it or measured in soil were due to
rate was estimated at 1 meter above the ground.
cesium-137.
The
Gudiksen et al. (17).
.
c.
The federal standard is less than .45 roentgens per year (R/y).
Robison et al.
(6),
based on dry weight of soil
i
'
—
- er
:.
a,
-
.
fresh weight).
IO0004S
|
49
(about 80 percent of