METEOROLOGICAL INFLUENCES ON Sr CONCENTRATIONS 40 a | | | 5x10 35 -— _s — | | - i ° 30 r- a 25 % N < =P Z < S3 > 7 WwW Go ti 4 =-20°C g + -1C 15 < us 3 wd an TOPS orc 10 Z lu 5 <{ 0 5 O 1x 10* = \J 1x10? S = . — Og 3 20 Z 7 <n S | TOPS — m—I1x1¢ 5. 103 5x 107-4 400 1x 10 HOH Og = ho qo ce Hos i — os z = Oo U >> 100 hO+ 2 5 oo _ £ OA gO ul e Z¢ 589 60 — a 30 F~ ae 20 — . u —_ £3 tol — -= & 7 wa Y a 0 _ 3 La =™ ¥ — _| | —— | | | | 1900 1920 1940 2000 | 2020 2040 | T= 2140 2200 TIME, EST Fig, 2—IBy deposition, precipitation rate, and THI cross sections for the storm of May 10,1963. Contours of reflectivity are given in units of mm 5 m4, curred about four to five months after the last recorded atmospheric test.!’ in December 1962. The ®%Sr/Sr ratios for these four storms were plotted together with the ratios obtained for the other storms Sampled as part of this project in Pennsylvania, Oklahoma, Hawaii, and California, These ratios are shown in Fig. 3 with the many total storm ratios obtained by Kuroda™ in Arkansas rains. The apparent 50.5-day

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