Figure 2a
FACTORS AFFECTING DISTRIBUTION OF FALLOUT *
EFFECT OF PARTICLE SIZE
(WIND AND INITIAL HEIGHT ASSUMED CONSTANT)
a
ee
—_—
»
~~,
GROUND
@
WIND
CONSTANT
0
©
0
09
@
i
@ ata
LARGE PARTICLES FALL
FAST, LAND CLOSE
——.
0
~~
0
0
0
8 aa
SMALL PARTICLES FALL
SLOWLY, LAND FARTHER —
EFFECT OF HEIGHT
(WIND AND PARTICLE SIZE ASSUMED CONSTANT)
RI
-
7,
—,
‘
:
GROUND
|
WIND
CONSTANT
eee
ae
ee en we as
PARTICLES FROM LOWER PART
PARTICLES FROM UPPER PART
SN
a
a
LAND SOONER, CLOSER
* As suggested in Civil Defense Technical Bulletin TB-11-21, Fallout and The Winds, October, 1955.
FALL LONGER, LAND FARTHER
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Ass +
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