STATUS OF GLOBAL FALLOUT PREDICTIONS
108
|
|
|
I
i
q
Toy UT
|
TRAJECTORY, FT io]
9000 12,000
10°
—
z
> 10
O
<
10°
10°
377
_
JAN. 29, 1951
ALTITUDE, 9000 FT
95°W
—
—_ —_
—
[tte
| PEt tT tl
34N 36°N 38°N 40°N 42N 44°N
LATITUDE
TTT Tt)
a01a Ts
TRAJECTORY, FT
lo°
z
5 10"
15,000 FT
B2W
|
|
—_——___
—_
__
U
<<
10°
—_——
—
es
ae Oe ee
—_—
GO
|
14°N 16°N 18°N 20°N 22°N 24°N 26°N 28°N 30°N 32°N
LATITUDE
Fig. 7—Aircraftfilters obtained in cross-wind flights during Operation
Ranger illustrating effect of directional wind shear.
stratospheric fallout. Thus, during and for a month or two following a
nuclear test series, the fallout associated with the series is classified
as tropospheric fallout; afterwards, the fallout is classified as stratospheric fallout, It has been suggested that shortly after the cessation of
a test series, if confusion arises as to the source, the origin of the
radioactivity may be obtained from a series of successive ratios of a
short-lived to a long-lived isotope, If the decrease with time in the
ratio follows the decay of the short-lived isotope, the sourceis attributed to the stratosphere where scavenging is not present.