150
+—
45
7
—— 100
$r23/65,90
4
W
INVENTORY-Sr% MC/SQ MILE
=
=
INVENTORY
ORRATE
o
W
SN
— 50
4
—] 30
2
_
H— FE 10
— 10S
Ww
~
49 8_
g
w
.
uw
5
8 9
4
47
3
6
3
Ww
We
ul
H- <«tL os
45
44
— 3
se
si
|
1952
1953
1954
1955
!
1956
i
4957
0
1958
—
TEXAS TREE RINGS
(WILLIAMS OF HUMBLE
OIL & REFININ 6
BLE OIL
|
|
CO.)
Va
© RING
O RING
RING °
MOSS
VES
RING
“2.46 %/YR
1955
INCREASE IN C'* CONTENT, %
3.6%/YR
TwiGs @
o
an
°
an
nm
o
INCREASE IN C'* CONTENT, %
tM
an
Fig. 9—Stratospheric inventory and rate of fallout; also Sr®/sr® ratio.
$956
1957
~~
SURFACE CO, AT MAKARA
1955
L
1956
Fig. 10—Bomb C#effect.
264
|
2.1%/YR
1957
a
«£