WIND
CONSTANT

WIND
CONSTANT

NN,

Ne

|

~~.
—,

_

PARTICLES FROM LOWER PART
LAND SOONER, CLOSER

ates s

nae

geo 907063

PARTICLES FROM UPPER PART
FALL LONGER, LAND FARTHER

9

—

SMALL PARTICLES FALL
SLOWLY, LAND FARTHER

~

—,

EFFECT OF HEIGHT
(WIND AND PARTICLE SIZE ASSUMED CONSTANT)

LARGE PARTICLES FALL
FAST, LAND CLOSE

NN,

TB-11-21, Fallout and The Winds, October, 1955.
* As suggested In Civil Defense Technical Bulletin

GROUND

aI

GROUND

em

==

(WIND AND INITIAL HEIGHT ASSUMED CONSTANT)

EFFECT OF PARTICLE SIZE

T*
FACTORS AFFECTING DISTRIBUTION OF FALLOU

Figure 2a

/

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