aq oe XRAY DA Location of Center of Rising Atomic Cloud from H-hour until H-hour plus 12.5 Minutes MiMUTES THAY WIND ACTED OW CLOUD aT EACH 5,000 FOOT LAVAL ae deel a stele Glowd Mase show s mee goved very livtie horlgantally during the firet three alnutes, It sevaed to be only alightly affected the onsterly elnde ubloh prevailed 25,000 fou, Therefore, date for the first three ainutes tere aot been considered La thease cal oulstions, fhe time lotervals given below have been determined by dividing the surve shown an the pege METHOD OF COMPUTLWG LOCATION OF CENTER OF aTCKIC CLOUD TOP AT Tl IT ARACHED HIGHSST ALTTTUSE | de the atomic cloud was acted upon by the upper viade during the 12.5 alnutes that 11 was rising, the top of tha cloud * inte 5,000 foot segments, 2, waa Jisplaced sbout 2,7 nsutical alles along a Yeotor directed from 224" by the * time that it resohed maximum altitude. This resulte in an increase ln distanse between the cloud and bhe theodolite obeertation stetiane which guat be cop tidered If the trus altitude of the sloud la to be determined, tet The position of the olouwd hae been galculated by joining Leguther vectors which are directed In scaardance with the upper wind at the 5,000 foot level is question end which ars propertional in Length to the thas that the cloud required 4o pase through the altitude interval, The redii of the elreles are is neutionl miles, and the individwal veotore are identified by figures signifying thousands af feet. 23 30,000 240 35,000 40,000 45,000 50,000 55,000 2a 220 229 230 220 (3.1 - 2.5) © 0.6 30,000 (J.8 - 3.2) = 0.7 4,000 (4.4 - 3.8) = 0.8 W0,000 (5.7 - &.6) © 2.2 63,000 «(7,0 ~ 5.7) © 13 $0,000 (9.1 - 7.0) + 2.1 53,000 {12.5- 9.2) © Ju Aliiiuds Oearage 25,000 niet 25,000 LESOTMS OF VECTORS IN MAIRICAL MILES OPPaN WINDS aT H-HOUR witiiede ‘eat om elther side of the altitude in question, ahd vending off the intersectians of plotted aurve all the ties ordinates, These time Intervals are sonsidared to be the umber of ainetoe Unat the epper aind# acted of the gloud at esak 5,000 foet level. owe 0.6/o « censitinteniaabelitinkd aan BO" Length of calculated vector 27 n, miles , direction — from 224° Meets Bawiice) WW eo 0.7/oO « MY « 0.0/ 2 Be 1.31/60 2 - 1.3/40 2.1/0 Sed/60 .